1. (noun) A wig, intended to resemble women's hair, that is forcibly applied to a man before an act of non-consensual sodomy.
2. (noun or verb) The act of applying an attractive garnish, often cotton candy, to the top of a drink you might otherwise not enjoy. The act of "prettying it up" before slamming it.
"Hey Ronnie, is that your rapewig?" "Da. Is one of them."
"I'm so happy I put a rapewig on all those PBRs last night. It made me feel better about how awful they taste."