(n)- when your friend is banging a chick, you cover yourself in dirty laundry on the floor so you can move along the floor to watch, in a properly concealed state. The laundry blends into the environment and breaks up your outline, much like a ghillie suit worn by military snipers
guy 1: "dude, you should have seen me banging my girlfriend last night!"

guy 2: "Ya, I did, I did the dirty laundry ghillie suit"
by Jonny702 January 7, 2010
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When a business person in attire has sex with a coworker with only their pants down during business hours and everyone knows it happened
Our boss carter has a dirty suit every Friday with the janitor Taylor

Dude look at those dirty suits of accountant Koral and Nikki
by Onlyme4you April 27, 2020
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