The blonde from the glory hole, I assume the only blondes are Dave and his father? (he does seem happier at the end of the game)
Well, blonde is a common hair color, so I guess we'll never know...
yeah its definitely his father. If you do the repair man route, you know that your dad goes to the bathroom after
Also, if you take a good look at Dave's dick, you'll see how similar it is to the one in the glory hole scene! ; )