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A Butt Sauce Removal Mission is when you sprint to the bathroom like your backside is on fire and your butt is leaking a mixture of old pizza grease and exploded cheese curds.
I had to do a B. S. R. M. after eating three slices of pizza in one go.
My B. S. R. M. was so urgent I woke my roommate up at 2 a. m.
I did a B. S. R. M. in the middle of a Zoom call and my boss saw everything.