"You're kidding, you showed the SSS to your parents?!"
"The SSS?"
"Sexy Soup Scene!"
"I- Yes, I did."
"...So that's how you lost your arm."
"You can't see it, but I also lost half my brain, too."
"And you've got a bite mark on your leg."
"Yep."
Meaning, CoryxKenshins Spooky scary Someday(or rarely on sunday)
the inside joke for it is since he is always late on sss people have started saying spooky scary someday