An Irish surname translating from Gaelic to "kind" or "caring"

That's it. That's literally it. It has nothing to do with cumming in a man's eye, as stated by the only other definition that exists on Urban Dictionary (as of writing this).

When male ejaculation gets splattered into the left eye of a male partner. If the right eye get's hit instead, it's called a "Donnelly" in some circles.

A female painter that painted mostly flowers usually considered to resemble vaginas. This has led to the slang of a "Georgia O'keeffe" party which is the opposite of a "sausage fest".

An all female party.