Why are black people like sperm? Because only one in a million actually work.
I don't appreciate the way you're making that analogy against black people.
Oi, it's a joke I tell ya. I love black people.
Using an insulting, offensive or degrading remark based on an identity group only serves to breed hate and discontent. Jokes are fun, but the punchline of your offensive statement attacks a group with less power within society.