I wish I could've punched that task-giver, seriously.
Master alchemist quest also has some giggles.

The Blacksmiths daughter in Blackbrough - if you talk to her she farts and asks if you can do that - makes laugh everytime.

Toilet jokes are not funny unless they're done just right -- immature minds notwithstanding. None are done anywhere near right in this game, in fact it goes way over the top with hacking and spitting. When I first met Zoltan and we agreed to talk to Dandelion's girl friends, and he stood there doing nothing but hacking, I wanted to decapitate him. A lot of townsfolk, usually women, do nothing but make vile hacking sounds when you talk to them. Disgusting.

IMHO the girl at the Blacksmith nails it. I agree with the overall overuse of the hacking etc.....

Quest in Kaer Morhen with Lambert:
[L]Ugh, you fat fuck!
[G]You are not exactly a feather, either.

- Of course, the whole drinking afterwards :)
- Singing troll was also nice.

So many funny scenes and references!

Also in the quest for Zoltan, when he said you had to meet Zed, I already knew where this was going :D :D