dirty stop-out 

A person who has not slept in their own bed on a specific night, with the inference being that they had sex, probably with someone met that evening (in a bar, club, wherever).

Where the hell were you last night, you dirty stop-out? Did you go home with that guy/girl/goat/etc?

dirty stop-out by mammon_the_source October 16, 2009

dirty stop-out 

Probably Australian. Meaning someone who stays out later than expected having a good time.

'Hey you're home. I was just on the phone to ____ telling her you're a dirty stop-out.'

dirty stop-out by Ray Babycakes July 18, 2006

dirty stop out 

A person who stays out all night shagging or generally up to no good! An affectionate, jokey expression originated in the North of England to describe slutty girls and boys.

Where have you been all night? You dirty stop out!

dirty stop out by TaniaD March 27, 2007

dirty stop out slag

person who'm stays out late to enjoy themselves

dirty stop out slag means people that go out and stays out late without word and has pleasurable sex for fun pretty much like my friends ex

dirty stop out slag by Mik912 November 13, 2005