Hey.  Y'know what really grinds my gears?  When cartoons characters cry projectile tears.   ...Huh, didn't really mean to make a rhyme there. 

I hate it when cartoon characters are crying and they shoot out massive arcing waterfalls that flood the room and then the other characters go by in a rowboat with raincoats and umbrellas.  Now, I'm not at all averse to a slapstick show if that's show's entire foundation such as Rocko's Modern Life, but I'm talking about when they do it in show that takes itself fairly seriously and it ruins a scene that should be emotional.  I was never a fan of the waterfall crying in Pony.  I never found it to be humorous, and it just makes me not care about why they're upset because it's so silly looking.  I much prefer the realistic crying any day of the week.