I have found your thread with the lyrics to "Blazing Away" to bring back many memories. This led me to think of a rugby song which was set to the tune of an opera which featured a drinking song (i think)
but the lyrics were changed to sing about masturbation. The only line I ca remember is
" pushed it pulled, banged it off the wall "
followed with:
"da da, da da, couldn't come at all"

It finishes with
"Some may say that making love is grand
Me. I prefer to take it in the hand"

Hopefully, someone will know this.

Johnnyboy