The retarded sister refers to the non-dominate hand of a male that they don't frequently use for masturbation and does not seem to have the coordination of the dominate hand.
Synonyms for Retarded Sister
On this page, you will find 30 slang terms related to retarded sister. Some of the top words include: Lord-Mustang, wanktard, Salso, Windowlicker, fagtard, and 25 more.