I've been watching a TV show called Two and a Half Men and there's a part where Allan says to Charlie:
Why what'd you do?
and Charlie replies
I did Rose.
I've researched this and found that the word "did" here means "have sex", so basically he meant:
I had sex with Rose
But my doubt is why was the word "did" used to represent the "sex act"? What is the origin of that usage?
Link to the video: YouTube (the timestamp is 0:11)