You heard a conversation between Sans and Papyrus:
Sans: "Sub bro."
Papyrus: "DON'T 'SUB' ME BROTHER! YOU STILL DIDN'T REDINTEGRATE YOUR PUZZLES!"
Sans: "Easy bro, I have done a ton of work today."
Sans: "A skele-ton."
(Drum effect)
Papyrus: "OH MY GOD SANS!"
Alright, listen up, numbskull. Sans is makin' a pun. See, a "skeleton" sounds like "a skele-ton". He's sayin' he did "a skele-ton" of work, which is a play on words 'cause he's a skeleton. It's so bad it's good, ya dig? And you, you probably think water is dry, don't ya?
