1 definition by garry good cunt
when both your dad and his brother were fucking your mum at the same time befor you were born.you have no idea who is your real father so they are both uncle-dad.
"uncle-dad i caught uncle-dad in bed with mum again last night"
"i will kick my brothers fucking arse son don't you worry"
"i will kick my brothers fucking arse son don't you worry"
by garry good cunt March 31, 2009