Mars bar

also known as "Mars and Venus", cockney slang for a penis, a male sexual organ
I ain't sucking on that tiny Mars bar
by roos_va June 13, 2004
mugGet the Mars barmug.

marbles

also "marble halls", a cockney rhyming slang for male balls...
She took him on his marbles and squeezed them really hard.
by roos_va June 13, 2004
mugGet the marblesmug.