When a guy fully agrees to a friend's invitation or plan, and then blows it off for weed or vagina instead. Usually includes a far-fetched followup excuse.
Trev: "You coming to my birthday party or what, Hoss?"
Nate: "Fo sho, dawg. I don't see any reason why not."
Nate (three days later via txt): "Sorry bro, wanted to to go out but had to work on my ex-boss's laptop all weekend"
Trev: "Ya right dude. I could tell it was a hossibility"