A contracted form of the Cockney rhyming slang 'grumble and grunt'. I refers in an unsavoury way to an eligible female.
You may not like it but it's out there as part of our urban linguistic culture.
Certainly in use in the 1960's
"I'm going out on Friday night to pull a bit of grumble".
Free Daily Email
Emails are sent from firstname.lastname@example.org. We'll never spam you.