Not much more to it than that: A character dispatches two enemies simultaneously by knocking their heads against each other. A common tactic of The Big Guy
- Roadblock did this a lot in G.I. Joe when combat got hand-to-hand.
- A variation done by The Tick against the Idea Men: he smacked the head of one man in a line of them, causing them all to knock against each other like a clicking balls toy.