wanking contest of high speed endurance between 2or more men/adolescents. loser eats the jam roll. see also soggy biscuit.
Tarquin and rupert were bored at school one day and decided to play a game of jam roll jurk off. Tarquin lost and was picking jam roll out of his teeth/pubes for a week. Delicious!!!!
by The Great Jon Cooper, stoke August 12, 2006