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 07, 2020
A half sibling via your father
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 02, 2009