have it away with
have it away
rude slang To have sexual intercourse. Primarily heard in UK, Australia. Did you really have it away with that hot chick from the bar? Is that why you never came home last night?
have it away (with someone)
To engage in sexual intercourse (with someone). Primarily heard in UK. I wouldn't have it away with someone you work with—it will only make things really complicated at the office. I can hear my neighbors having it away at night—it's really embarrassing!
have it away (or off) withhave sexual intercourse with. British vulgar slang
1998 Oldie Today, young Billy would be having it off with all three young ladies on a rota basis.