When two guitarists or guiatrist & bassist play live and lean up against each other back to back.
Aerosmith put on a classic 'rawk' show down to Joe Perry and Brad Hamilton's homo-erotic Jam Sandwich during "Walk This Way".
by Stubblecat March 30, 2007
going down on a woman when she is on the blob
my missus was on the blob last night, so I had a jam sandwich. Mmmmm....
by hotsexybiznatches January 26, 2004
A used, bloody tampon...
Aw man, that girl has just chucked a jam sandwich at him..
by suprisedperson January 15, 2006

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