Definitions by Renob1984

soft jam 

When a male fails to achieve a full erection. As a result the male attempts penetration while "semi-soft".

Dude I couldn't get it up, so I ended up soft jamming her for most of the night.
God, she was so busted I could only manage to try and soft jam her.

soft jam by Renob1984 February 1, 2014