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1. What those closest to Benjamin Franklin refered to him as because he liked to partay!
2. A term of endearment for any male named Benjamin.
Boy: You know who was the sweetest dude in history?
Girl: That's easy; it was Ben Jammin'! That guy was so fly and he was one of America's founding fathers!

by NotAPaperGirl October 23, 2008
A guy named Ben who likes to jam.
look at Benjammin', hes really jammin!
by rounoush January 22, 2009
An adjective used to describe the overwhelming positive qualities of a person or item
That was so ben-jammin'!!
by Edge Bruce July 04, 2011