burn in

Military term used to describe the action a paratrooper smacking into the ground after their parachute fails to open.
Damn! Did you see Johnson burn in. He must’ve bounced 20 or 30 feet in the air when he hit.
by Trav September 27, 2004
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M & M

Abbreviation for marine mattress. Slang term for a woman or guy that only gives up the booty to marines.
“Hey, that new Air Force chick that showed up at the office yesterday is hot.”
“You don’t have a chance dude. She was in my class at the Defense Language Institute, she’s a freaking M & M and a half.”
by Trav October 21, 2004
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