1 definition by pdxbill
This happens when mothers has sexual relation with her spouses (PATERNAL) fATHER. The child is raised as the brother of the mother and father child. The reality is the child is offspring of the paternal grandfather. Thus combining the word BROTHER+UNCLE= BRUNCLE
The reason my parents divirced is because my mom cheated on my dad with his father, now instead of a brother he is my bruncle.
by pdxbill November 20, 2021