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to eat; to tear through
i could totally jam on this bag of chips
jam on by Danielle August 24, 2004
When you shart as you button your pants.
Yesterday Scott went full jam on em.
Jam on em by Bnicks45 February 18, 2021

Jam on toast 

'yo dude, check out my new blades...'
'Jam... on... toast'
Jam on toast by Jiggins April 14, 2005

jam on a biscuit 

It's a continuation of the popular game of "sticky biscuit" where men masturbate over a biscuit inserted in a lady's vagina. Except in this version the lady is on her period.
"Oh man, you missed a great game of jam on a biscuit last night. That menstruation sure tasted good"
jam on a biscuit by mumsnot July 9, 2014

jam on toast 

Having sex in a car.
jam on toast by silverspeaker January 12, 2011

Jam on the pickle 

I was fucking this bitch,when I found out she was putting jam on the pickle,or jam on my pickle.