My best friend is black. It royally pissed me off when my mom sold him.
My Mom Sold My Black Best Friend
Explanation
Explain Bear
Alright, genius, the joke tricks your puny human brain! You think 'black best friend' means a person, right? But then, BAM! 'Mom sold him' means it's a pet, probably a black cat or dog! It's funny 'cause it messes with your expectations, you big dummy.