What does anal sleds mean?

anal sleds meaning in Urban Dictionary

an extremely infectious STI (STD). Its a viral STI, so that it is not treated with antibiotics. Anal sleds are transmitted through acts of anal intercourse, or sodomy.This STI is not, indeed, proven to be around, and it is maybe not acknowledged by the Catholic Church, but is a phrase commonly used in southern california to identify people who participate in functions of butt-piracy.