An extremley iconic gun used by various organised crime syndicates in the prohibition period, it was created by John T Thompson in 1918.
John: best gun in MotD?

Bill: the tommy gun
by Dons. March 10, 2020
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A sexual term to pleasure not only yourself, but the person sitting next to you as well. You must grab not only your penis but your neighbor's penis at the same time. Start pumping at full throttle; Once both of your bodies are shaking out of control, and you both have succsessfuly ejaculated onto yourself you have acheived the Tommy Gun.
I heard that Alex has been giving Tommy Gun lessons for so long that he only shoots blanks.
by Alo4Sho May 20, 2008
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Named after the Thompson sub-machine gun, it's a slang term used to describe someone masturbating until the ejaculation of blood. Can be used as a noun or verb.
1.In sixth grade, Mr. Young convinced Tom to pull a tommy gun.
2.The next day, Tom couldn't skate because he was too busy tommy gunning.
by Tyred December 19, 2005
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To be double crossed or back stabbed. Helping someone on the way to success thinking they did it themselves without help.
After two long years of showing Isaac the ropes, that some of a bitch Tommy Gunned me.
by DEFKON99 October 19, 2018
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A sexual term described as when a woman rapidly shoves her boobs, one boob after the other, into a mans face.
She tommy gunned his face during marital sexual intercourse.
by December 2, 2020
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A scene from JoJo's Bizzare Adventure: Battle Tendency where Joseph Joestar takes out a Tommy Gun and unloads the whole freaking clip on Straizo.
Joseph: Takes out Tommy Gun.

Joseph: Tommy Gun Overdrive!!!

*Gun noises*

Straizo: Lol noob didn't work.

Joseph:

NIGERUNDAYOOOOOOOOOOOOOOOOOOOOOOOOOOO
by nice rigger December 3, 2020
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