Fack-Shiggity-Shak
When you're too scared to say the real swear, so you fake one and hope no one calls you out.
I fack-shiggity-shak’d my dad when he said I had to clean my room.
He fack-shiggity-shak’d the cop when he got caught smoking in the school.
She fack-shiggity-shak’d the whole team when they lost the game.