This Clip is a short version of the Monty Python's sketch "Ken Clean Air System". You will find the complete sketch in Episode S02E05 "Live from the Grill-O-Mat" from the TV Show "Monty Python's Flying Circus".
Punch line:
"Obviously boxing must have its limits, but providing they're both perfectly fit, I can see nothing wrong with one healthy man beating the living daylights out of a little schoolgirl. It's quick and it's fun."
