Rod Hull

A 'Rod Hull' is the act of falling off something and usually dying in the process. The 'Full Rod Hull' is falling off your roof whilst fixing a television aerial.

"I did a Rod Hull off the kitchen counter last night"
"Did you die"
"Not quite"

Rod Hull's Roof

An extremely smooth & wet vagina

Bobby: FUCK ME SIDEWAYS with a 10ft Barge Pole DAVE, you should of seen the lass last night. She was wetter than Rod Hull's Roof