Lil Bro Completely Owns Big Sister with Outstanding Dance Rendition of ‘Smack That’

Standard stuff here. Little sister thinks she's somewhat cool, gets destroyed by the little brother who's not even remotely trying. Dude probably snoops around her room and reads all those all her strange teenage girl love letter notes, except I just realized those probably don't exist anymore. And I'm not even that old. Sad. 

[H/T: Guyism]