Duct tape & shaving cream

"Do you want to help me with a prank?" Lynette asks me with a grin on her face.
"Um, sure... what's going on?"
"Well, it involves shaving cream, duct tape, and a door jam."
"Alright, I'm in," I reply, terribly curious about who this prank is going to be on and what exactly I just got myself into.