knock one out
1. To masturbate to orgasm (usually suffixed by "over" something or somebody). This is usually but not exclusively used to describe male masturbation.2. To lose consciousness (3rd person). Used when describing a general nonspecific occurrence.3. To lose consciousness (1st person Royal). Used exclusively by members of the
hereditary ruling families of English speaking countries to describe what happened to them when they were last playing "Who's
the Tampon,
Camilla?"4. (imperative) An injunction given, in the 2nd person singular, to knock out one of whatever is to be knocked out.