Gully Wombat

To knock someone out with one punch or beat someone up badly landing a particularly hard punch to the face.

Originated in Leeds

Person 1: Did you see the fight?
Person 2: Yeah he gave him a right Gully Wombat, knocked him out cold

Gully wombat

To knock someone out with a single punch

James: "I saw Josh Warrington once at headingley stadium, I thought he was going to gully wombat me"

"Did you see that fight last night?"
"Yeah, he gave him a right gully wombat"