Do you know who invented paper?
Cai Lun!
“RIP” Cai Lun.
Do you know who invented paper?
Cai Lun!
“RIP” Cai Lun.
Listen up, genius! The "RIP" is for "Rest In Peace," like when someone dies. Cai Lun invented paper, so the joke is that he's dead now. Get it? I doubt it, but whatever.