noun
Vulgar Kansai slang for female genitalia. Strongly informal and offensive; not used in polite contexts.
あのエロ本、おめこがドアップで載ってたわ。
That porn mag had a close-up of a pussy.
noun, noun or participle which takes 'suru', intransitive verb
Vulgar Kansai slang for sexual intercourse. Can be used as a noun or with する as an intransitive verb.
昨日、彼女とおめこした。
I fucked my girlfriend yesterday.