Fack-Shiggity-Shak
When you're too weak to say the real swear, so you just make one up and hope no one notices.
I fack-shiggity-shak’d my mom when she said I had to eat veggies.
He fack-shiggity-shak’d the principal when he got caught eating pizza during lunch.
She fack-shiggity-shak’d the whole church when the pastor yelled too loud.