What made Mr. Meeseeks funniest in Rick and Morty?

Mr. Meeseeks
Rick and Morty (2013)
Rick and Morty
TV
Mr. Meeseeks poll options
Mr. Meeseeks
Rick and Morty (2013)
Rick and Morty
- His existential desperation
- The chaos he caused for Jerry
- His cheerful catchphrases
- How absurdly fast things escalated