Ooh Yeah!
Rick and Morty is a comedic animated series following the adventures of a genius, multi-verse travelling, morally dubious scientist named Rick and his rather simple and unassuming grandson Morty.
In season 1 episode 5 Rick introduces a Meeseeks box, this box brings Mr Meeseeks into creation, Mr Meeseeks is created to serve whichever task you give him and once completed he will blip back out of existence.
This is every time Mr Meeseeks says "ooo".