Get a plastic sandwich baggie and put some Vaseline in it. Then put your penis in and squish all the Vaseline around so it covers your penis. Once that is done, kneel in front of a bed. Lift the up mattress and put your penis, with the baggie still on it, between the mattress and the box-spring. Start pumping as if you were having sex. When you're done, all you have to do is throw away the baggie.
by Borpheous September 01, 2006
The act of putting vaseline in a sandwich bag, sticking it between a mattress and inserting ones penis until ejaculation. Also known as “matress n baggie”.
by VapeGod_23_69 August 13, 2018