I loved this momment in All 4 One: 
Croid: I think he needs to poo. I'm gonna get a baggy.
Qwark: Hey Doc, get two it's been a loooong trip. 
 Made all the funnier by the suspicion Qwark would!
I'll throw in another A4O one, just after they fix Spog
Qwark: You did the right thing Doctor
Neffy: Get bent!
Had me sniggering 
Thanks to Nefarious quote now I know how to deal with bullyis
 
 
Ratchet: What are sewer crystals anyway?
Plumber: Huh…, you don't wanna know.