I have tried to it keeps saying the item which idk what he meant so I just throw it out which ended up me going to prison 

(Credit: @ragnarokk) While you can't sell parts, you can throw them away. However, they are highly illegal, so throwing them away will *result* in a visit from the police and the end of the game. Follow the guide below to do so safely and avoid a long sentence for dildo assembly.

1. Try to discard a part; Amon will comment that it's risky. You can still do so, but if you do, you'll lose the game.

2. Anon will think of someone who can help, and you'll receive a text message. Enter bigdaddyhurt (hereafter BDH) as the name.

3. Anon devises a plan to contact BDH during a stream. Their idea is to make a comment they hope BDH will see. Go to the stream. In the chat comments, you should see a yellow comment scroll by during the stream in the chat window. That's BDH. However, depending on your subscribers, it could scroll by so quickly you might miss it. After the stream, you can check if BDH saw the comment. The comment says to meet him outside in the alley at 2 a.m.

Please note that Anon will not react in any way to the comment. You will not receive any feedback or sound.

4. Anon will still "see" the comment. You don't need to give us any further information.

5. If you're unsure whether BDH reacted, try dismissing a portion after the broadcast. If Anon mentions that he needs to meet with BDH at the scheduled time, you're on the right track. You can still dismiss the portion; please don't.

6. Exit at that point and continue the story from there. TL/DR version (Credit: @shadowspectator)

1. Try to throw the piece and then reject it.

2. Type "bigdaddyhurt" in the text box.

3. Broadcast to receive a yellow message in the chat.

4. Go for a walk around 2:00 and you'll find it. Keep in mind that some altered items that you might consider clothing may be coded as parts, and if you throw them away without going through this process, you'll call the police. A little guide on how to throw away parts without BigDaddyHurt's help and what you should do to avoid the end:

When you throw away a part, you can throw away any number of parts *before* the next day. (Example: you throw away a part on day 8. You can throw away any number of parts until day 9.)

Don't throw things away for the next few days. You'll call the police immediately.

Wait 3 days. You'll see an event where the owner is talking to men in suits.

Wait another 3 days after the LL event. You'll receive a call from an unknown person.

After a brief conversation with the person on the phone, you'll see the options: "BigDaddyHurt, is that you?" and "Enough with this nonsense, I'm hanging up." You should select the second option: "Enough with this nonsense, I'm hanging up." The first option indicates that this isn't the real BigDaddyHurt.

Even after the call, don't throw away items *before* meeting the real BigDaddyHurt. If you throw away items without his help, you'll get caught.

Since the new update is out, you should do this if you prefer not to stream. (Credit: @ragnarokk) New option, no streaming required:

Try to throw away a part and reject it.

Type "BigDaddyHurt" in the text box.

Purchase any item from his shop. With this item, a new item should appear in the package: "Lingerie Catalog."

Wait for delivery.

Use the "Lingerie Catalog" in the "Items" section of the left closet, under the "Other" tab.

Go for a walk at 2:00.         (@shadowspectator).  Also sending small test and dialogues/choices screenshots as add. Screenshots placed in order and writed in guide.   Spoiler: Some tests about throwing out parts.

I send screenshot instead writing dialogues. They they will be in order, first is first, second is second, etc.

You can throw out as many parts as you want, if it was in one day, when you throw out your first part.

Example: Day 8. You throw out part. You can throw out any amount of parts until day 9 comes. 

On next day, any parts you throw out cause you will be caught by feds. (Dialogue screenshot 1)

When you throw out part, you need wait 3 days. After 3 days has passed, you will get event with Landlord and guys in suits. (Dialogue screenshot 2) 

Wait another 3 days. You will get a call from unknown person. (Dialogue screenshot 3)

After small talk, choice appear. (Dialogue screenshot 4 (Choice))

If you choice first variant (BigDaddyHurt, is that you?), then you will get next scene, where you get caught by feds. (Dialogue screenshot 5 (BigDaddyHurt, is that you?))

If you choice second variant (Enough with this bullshit, i'm hanging up), then you will end talk, feds don't get you. (Dialogue screenshot 6 (Enough with this bullshit, i'm hanging up))

After second variant, you will be safe, unless you throw out another one part without BDH help.

Also, ending text screenshot.(Ending).

For short...

You can't sell Sexbot Part. (At least for Version 0.90.15)

You can only get rid of them by throwing them out safely.

How to throw out Bot Parts safely with no consequences/How to start BigDaddyHurt's Storyline :

1. Try to throw out any Bot Part.
2. Anon hesitates whether he should throw Bot Parts out or not.
3.  Choose "Don't throw it out"
4. Anon will think of someone who could help him. The name of the person is "bigdaddyhurt"
5. After you input his name, Anon will think about a way to contact BigDaddyHurt.
6. Order anything from BigDaddyHurt's Shop
7. After your Order arrived, check your inventory for an item called "Magazine"
8. Use the "Magazine"
9. It will tell you to "Go for a walk around 2 AM"
10. After around 2 AM, go for a walk, and you should trigger BigDaddyHurt's Event.
11. After the Event of meeting BigDaddyHurt in person, you can now throw out Bot Part with no consequences, and you also unlock his storyline.