Knock the top off

To give oral sex to a male

knock the top off eg:
Hey Rolfus, how did you go with that waitress?
" She knocked the top off "

by Bigwoody76 April 28, 2010

knock the top off

Phrase used to describe to describe masturbating shortly before having sex in order to prolong intercourse; most effective after a long dry spell.

It's been a while since I got any so I had to knock the top off before we did it.

by Niki C January 12, 2006

Knock the top off it

Aussie slang for masturbation

"I went on a date last night but the sheila didn't put out so I had to go game and knock the top off it"

by Digger111 June 13, 2016

knock the top off of an anja

To masturbate while imaging an 20 year old Slovenian is about to have sexual intercourse with you

I'm gonna knock the top off of an Anja tonight after chatting on the forum

by fish_n_smnb October 20, 2008