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1 definition by Theblackbridge

A Lady, Woman or Girl that thinks it's a turn on to fuck all of the british army whilst on a night out. The Squaddy Mattress earn their keep by getting free drinks from the from the unsuspecting soldier in return for back ally action.
"Lets get out of here this place is full of Squaddy Mattress's"
by Theblackbridge February 01, 2010