The word has been around at least since the 60s in the meaning "tired" and is recorded in several slang dictionaries. From personal experience I know that the discussion about the sexualized secondary meaning ("sexually exhausted") has been around for at least ten years. However, I've never heard or seen the word used in normal conversation in the sexual sense. If you google for it, you get hits that belong to either of these three general categories:
- Articles and particularly blogs where someone says they're tired or someone is described as being tired without any hints of sexual activities.
- Discussions about the meaning of the word where people who appear to actually have used the word in everyday speech tend to express doubt about the validity of the sexual definition.
- Obviously non-sexual usage of the word that generates largely whimsical comments about how piquante such usage can be.
There doesn't appear to be any genuine attestations for the sexual definition. Therefore, I removed the sexual definition.