The Jimmy Jam is when a person who has dentures is having intercourse with another person. The person giving the penis takes his dentures out and jams them into the receivers anus at which point he yells JIMMY JAMMMM! And then pounds wildly on his chest.
OMG! The other night we were down at Shenanigans and Greco gave this old homeless man the Jimmy Jam in the bathroom!
by wong tong tilli tong March 27, 2009
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