I don’t know if these are my worst, but they are my latest:
Q: What do you call an African maths teacher?
A: A black adder
and
Homosexuals can sometimes be a pain in the arse.
Sign on the geologists office: gneiss, tuff, and a little wacke.
A reporter from Life magazine named Fred Rhee went missing while on assignment. His editor hires a private detective to find him. After an exhaustive search, the detective locates the writer and exclaims: “Ah, sweet Mr. Rhee of Life, at last I’ve found you!”