Tuck your opponent's head between your legs, lift them upside down, drop to your knees so their head spikes into the mat. Banned in WWE since the late 2000s because it's genuinely one of the most dangerous moves in wrestling — a botched piledriver can end careers or worse. Only Undertaker and Kane were allowed to use it in WWE's later years. The Tombstone is a variation where the opponent is held face-down.
"That's a banned move. The fact that he just did it on live TV means either someone's getting fired or this storyline is very serious."