Obviously, It Would Be Commonly Confused With Killing Bloods ((Gang Related)) But It Is NOT! To "Bust Blood" Is When You Are Performing Gymnastics, Or Something, And Blood Vessels Break Underneath The Skin, Causing A Red Mark/Blister.
"I Was Swinging On The Pull Up Bars By The B-Ball Courts Yesterday, And SHIT I Busted Some Blood!!"

"Fuck! I'm Busting Blood!"
by FuckThatHurts April 4, 2009
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When you are masturbating and you have a bloody nose
Teacher:why were you in the bathroom so long?

Me: sorry I was busting a blood
by Aid man May 19, 2020
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