J F'n C
A very rude and shocking way to show you're surprised. Use it in church if you're not afraid of getting cursed by the altar.
He said "J F'n C!" when the choir started singing opera and the organ played a solo.
She screamed "J F'n C!" when the pastor turned into a giant flamingo.
He yelled "J F'n C!" when the church started shaking and the stained glass fell out.