Another friend.  This is Matt.  He is a young adult and is kind of tall.  He is really funny.  I don't know what he does in real life but in video games, he likes things to be a certain way.  I don't think he is perfectionist but he likes things to not be a mess and I bet that goes for real life too.
In pose A, he is taking out the trash and the bag is leaking green stuff, gross.  He tries to keep it as far as he can but the smell is making his want to hurl. In pose B, he is shaking someone's hand but it has a familiar green mess on it.  Matt doesn't want to be rude but he would rather not touch that. He shakes the guys finger instead. In pose C, he is baking away with his hands up because someone, probably Huntang, is trying to give him something unpleasant.

I think the important parts of the pose are his hands and eyes.  His eyes are focused on what he is disgusted by and his hands show how his body reacts to whatever it is.  I want the audience to look where he is looking. (the trash bag and the dirty hand)  His weight is centered in both feet but it depends.  In pose C it alters because he is backing away from something.