adamantly assuming the clothing store sold drugs just because Lis promised a treat there that wasn't food, if it was just a couple of lines then it would pass as a little "misunderstanding" joke but it went on WAY too long
then the entire opening to the interrogation with so many slaps and over the top aggression, the first one as a nervous mistake was like "wtf lol" kinda thing but then it kept happening and then the fact both mc and claire let each other's names slip despite claire specifically saying not to use each other's names as the only rule to follow seemed like way too much of a dumb mistake for either of them especially claire (I'd also personally say the kelly workout joke dragged on a little, and was out of place cause the scene was finally taking itself a little seriously as a seperate critique)
a slip up doesn't make a character stupid it's continuing to make the same mistake that makes them appear dumb, which is why it's mostly the length of the jokes that messes it up imo, he should've understood sooner with the clothing store, and he should've calmed down after the first slap, as for the name thing I can accept it as getting too relaxed after getting their answers, but I feel like claire atleast should have realised the moment she slipped or something rather than mc having to dream remember it, considering that it seems like she's supposed to be some experienced badass and all