In the middle of the night, Tweek wakes up and texts Craig.
"Hey are you up?"
"I am now -_-' what do you want?"
"I can't sleep"
"Why?
"I wish i could sleep, but my A.D.D kicks in and basically, one sheep, two sheep, cow, turtle, duck! Ol' Macdonald had a farm! EEHHH MACARENA!"
In Craig's room, the boy was reading his friend's recent text message, and a smile actually appeared on his face, and he typed: "This is why we're friends!" And then sent it.