A term typically used by military personnel to describe a Friday that can go as bad as it possibly can. But it doesnt matter because it cant change the fact that tomorrow is saturday (or whatever your "weekend" is)
"Can you believe SGT Maj is having us do a 20 mile hike right before we have to stand in formation for 3 hours?"

"At least its bulletproof friday"
by Pringal Jugar October 4, 2019
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