To simultaneously wank whilst taking a dump.
James had work in ten minutes so he had to have a 'jammer'
one who takes part in a jazz session; jazzman.
He is a famous jammer.
A stool so large that jams the plumbing in a public crapper, causing an overflow state.
Bill took such a rasty jammer in the fifth floor head that building maintenence had to be summoned immediately.
Used to describe a musician who plays in a public area (ie, a show or party) with a number of other musicians; together, they improvise, or jam and it sounds beautiful!
One of the most creative and wonderful practices EVER, jamming is usually assciated with eclectic rock or jazz. Jammers are godlike.
Dude, check out that jammer! He's not following any music and it still sounds awesome!
a man's penis. meant with the intent that the man will attempt to "jam" whatever it is he will with his penis.
oh dear, oliver's got a nice jammer there.