Japanese porn? (my grandparents ask this on occassion when I'm watching tv at their place)
Sailor Moon! (I think everyone started getting their anime fix here)
DBZ vs Akira (who hasn't had this argument at some point in their embarassing past?)
Dub vs Sub (and then someone notices a translation difference)
Ghost in the Shell (at this point, people actually watch plot anime, not just everything)
Kawaii! (by here, everyone's that hairy guy in a skirt speaking with school girl Japanese)
^.^