On Jimmy Kimmel last night Katy Perry talks about going undercover for her latest video "Birthday" as 5 different--terrible--birthday performers.  What she failed to leave out, according to TMZ, is that the fallout from her going undercover at a 5 year old's birthday party was NOT GOOD. Including a kid asking for her mom to take her home. Awww, poor baby.  Watch the footage of what happens AFTER Katy is done, here.