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An amalgamation between a "munter" (see munter) and a mattress.
Usually a large individual that should know their limits, and comedic for all the wrong reasons.
"Muntress is at it again..."
by Dante May 08, 2004

Words related to muntress

chunder matress munt munter spew vomit
Australian slang. A matress which someone has munted (vomited) on. Muntress can also include sweat, piss and pool water.
Omg, Em just munted on that matress!
Someone put that muntress outside, it reeks!
by M-ASS O-Camp07 March 03, 2007