G'd Ya
Making someone think they're going to lose when they're actually winning. Like giving them the finger while you're already ahead.
I told him I’d beat him at Fortnite, then I logged off before the match even started.
She said I had no chance at the test, then I got a 100 and she got a 52.
He told me I’d fail the project, then I finished it and he still had to borrow my notes.