A military term used for a female soldier who sleeps around a fair bit. Related to the inflatable or foam mats used in the field, she is often under found a male soldier.
"Did you see the ground mattress in the other platoon?"
"I think everyone's had a go with that (ground) mattress"
"I think everyone's had a go with that (ground) mattress"
by Dickie613 February 10, 2009