To the Bone

Sans! Sans! Wake up!
 What... What is it, dude?
 A human has fallen from the surface world
 Really? And you got a bone to pick wit'im?
 No time for puns!
 Come on, that was a real rib-tickler, ayy
 Ugh! Enough!
 Alright, here we go again
 Welcome to the Underground
 How was the fall?
 If you wanna look around
 Give us a call
 We don't see humans often
 We're happy you just dropped in
 I'll be so popular when I show all the monsters what I just brought in
 Hey! Papyrus, mind your manners
 Can it, Sans? No time for banter
 Excuse my brother, he's a bit eccentric
 You're just lazy and apathetic
 Call me what you want, I got thick skin
 Another bad joke and I'm finished with him
 We are monsters, the awfullest kind
 To mess with us takes a lot of spine
 We can relate to your determination
 Because we monsters have our motivations
 Humans betrayed us and left us burnin'
 One day, we'll make our way back to the surface
 Through all your travels, your sins will follow
 Your consequences aren't easy to swallow
 Who's the real monster, now you should know
 You've cut this story down to the bone
 Really, Sans?
 What?
 The last line of the chorus is a pun?
 Yup
 You imbecile! That was very... clever
 Heh, thanks, buddy
 You're stuck in the Underground
 Thanks to the fall
 Good luck ever getting out
 Prepare to brawl
 You could show mercy to us
 Or turn all of us to dust
 Is your heart full of evil
 Or full of love?
 I, the great Papyrus, challenge you to try getting by us
 Test the human with one of your puzzles
 Brilliant, Sans, that'll leave him befuddled
 I dare you to try a bite of spaghetti
 Smells like the creepypasta is ready
 Stop it, Sans! I'm done with the jokin'
 Sounds like someone's funny bone's broken
 We can relate to your determination
 Because we monsters have our motivations
 I am the mastermind, he's my accomplice
 You're only still alive because I made a promise
 You'll lose your mind when you wander for hours
 You might even decide to start talkin' to flowers
 Who's the real monster, now you should know
 You've cut this story down to the bone
 Someday, I'll join the Royal Guard
 When I catch this child, can it be that hard?
 Look, if I'm being honest
 My brother ain't nothin' but harmless
 I know you and all that you want
 You'll get a lot more from Sans than a font
 The deeper you go, the messier it gets
 If I had it my way, you'd already be dead
 Kidding, if you couldn't tell
 I get so bored, I amuse myself
 Down here in the Underground
 You're all alone
 We wanted to tell you now
 You're kinda boned
 If you survive this prison
 You will know nihilism
 Don't mess around with monsters
 They're scared of tiny children
 Hah!
 You've come far, but soon you'll stumble
 When I stump you with some Junior Jumble
 Not so sure you'll get him with that
 Alas, I'll hit him with my special attack
 Leave me alone!
 You know I've got a knack for the trombone
 One more pun, and I'll be done!
 But ain't two skulls better than one?
 We can relate to your determination
 Because we monsters have our motivations
 You know your story's already been told
 We can play again if you sell your soul
 I've got my eye on you, so you just watch it
 I'll find any skeletons inside your closet
 Who's the real monster, now you should know
 You've cut this story down to the bone