Don't Be A Jerk (It's Christmas)

Nobody's A Nobody

Life can be a trial
Episode is “The Downer”

Down syndrome girl from the episode Season 8 episode 12: Extra large medium (its kinda sped up but it sounds better)

The song from the episode "The Compilation". 

Song belongs to Cartoon Network, I do not claim it as my own.

The Amazing World of Gumball's finest music!