a British term that means "to have sex with"
I shagged your mum last night, yeah mate!
Your mum fancied a quick shag before your dad came home.
I was shagging your mum in her arse when she shat on my cock.
"John and I have been shagging for ages! I don't know why we haven't slept together yet!"
A shag is a common word used by teenagers particularly the virgins
For example:Hello Milly want to shag bb gurl.
Milly:No mate get out