How to make me laugh for a solid thirty seconds

"One of the guys at work is an old-time MIT guy."
"Does he, like, walk around with a dog-eared first-edition copy of SICP?"
"No! He doesn't have it anymore! I think he sold it back!"
"Oh, no! Selling back books is sad."
"I know."
"I never did it after my freshman year, once I saw how little I got for them."
"I think it was the same for him."
"Ohhh...and they take SICP-class their first year, don't they. Oh. Aw, man."
"Yeah."
"..."
"..."
"Well. You know. Maybe he didn't realize how special it was."
"Everybody he knew had one."
"In Cambridge, the market is glutted with copies of SICP. Everywhere else, there's a scarcity."
"..."
"..."
"Business plan!"