When 2 good friends both ejaculate inside the same woman and the sperm joins together into 1. Similar to becoming blood brothers through pricking each others fingers.
by DonBay March 7, 2020
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ie from his 'spunk donation'
usually applying to promiscuous men with more than one family.
ie from his 'spunk donation'
usually applying to promiscuous men with more than one family.
I didn't know you had a brother/sister - Oh he's my "Spunk Brother / Sister"
Underlining the fact that the relationship is not a close one.
Underlining the fact that the relationship is not a close one.
by Big Superfuzz April 2, 2009
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