Cracking song and always a favourite at St Georges Hospital Med School RFC in the 80s.
Chorus very similar to those above but -

Craven A,never heard of fornication,
Craven A, never dipped his tool "shit",
Craven A, quite content with masturbation,
Thought a cunt was something that they called him at school.

and the verse "whilst rowing... we finsided with

" for shooting at spectators on the Surrey side"

All the best,

Tim