When you're having sex with a girl on her period and you get black/brown clumps of blood on your dick and in your pubes.
My girl gets so horny on her period but the blood nuggets are becoming a safety hazard
by Mattricide June 12, 2019
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Its a blood nugget. Can be used as an extremely offensive insult. Be careful who you nugget.
"Margery, get your blood-nugget off the table!"
by Kizzle t and carol lee April 3, 2008
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