Cassanangle
A Cassanangle is one who is inept in sealing the deal. Or in other words he is the guy who is about to have sex with a certain girl but fails because of some strange/cheesy comment said.
Person # 1: "I told her I should have never broken up with her last year and that her eyes reflected her soul back at me."
Person # 2: "Smooth one Cassanangle, you closed the deal finely."
Person # 2: "Smooth one Cassanangle, you closed the deal finely."