A faggot. Gay person. Homosexual. Batty man. "Buddy" is a common Jamaican term for "dick" and the "doo doo" part is self explanatory.
Person A: Damn that nigga has a fat ass. I'd love to fuck it.
Person B: You'se a fucking doo doo buddy.
Person B: You'se a fucking doo doo buddy.
by S. Gauntlett July 29, 2009