A phrase to desribe a severely over-used vagina which no longer provides any sexual gratification or the ability to retain bodily fluids. Somewhat similar to that of a Wizards Sleeve or a Clowns Pocket
Her pussy was so thrashed out, one could consider using it as a sleeping bag.

I left her so thrashed out, she'll never be able to look at her clunge in the mirror again.

Your Mum/Sister wasn't as thrashed out as I thought she'd be.
by omniscient87 August 2, 2012
Get the Thrashed Out mug.
Right Babe, I'm off to thrash one out (when girlfriend doesnt want sex)
by iamamanufan January 11, 2011
Get the Thrash one out mug.