Ha ha, Justproud2b, my lazy, slob Sim always farts and laughs and waves the smell onto other sims.
My sim just reached level 3 in the culinary career, and I was going to make her watch the cooking channel, and an option popped up to "watch culinary training videos". I don't know yet what it does compared to just watching the cooking channel. Maybe it increases work performance, maybe it teaches new recipes.
One action that always gets a giggle from me is when my bookworm sim is reading a book in playful mood. She opens and closes the book like it's a mouth and makes a funny voice for it.