What's a class/classes you struggle with roleplaying as?

We all have our favourite classes, and chances are, they are our favourites because we feel right at home roleplaying them. After all, that's the fun of playing an rpg, that you get to immerse yourself in it.

But I reckon the opposite must be true as well, and it certainly is true for me, for instance. Regardless of how strong a class it is, I am not a Monk kind of player, and you'll never find me picking that class, ever.

How about you? Are there any classes that, in a way, clash with your roleplaying preferences?