MacTavish
To MacTavish someone is to give them the worst possible sex experience ever, with zero protection and a ton of regret.
My mom said my brother MacTavished his crush and now he's got a rash.
I told my friend he MacTavished his ex and now he's got a permanent scar.
My teacher said I MacTavished the class and now I have to do 100 push-ups.