Dude: Man, I'm not feelin' so hot.

Dude 2: Maybe you have flu manchu?
by RobinGoodfellow1 March 10, 2020
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A facial accoutrement in the same shape as the iconic moustache, but constructed entirely out of Nasal Mucus.
"Man I'm not feeling great" *sneezes*

"Ha look dude you've grown a Flu manchu on your face"
"Oh yeah you're right, haha, I feel like I'm about to die"
by Joey Fat Tits July 29, 2021
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