[Potentially NSFW] Vocabulary and English usage question.

My memory is first hearing that in the late 80s/early 90s. I don’t recall using it when I was in college in the 70s.

It is one of the earlier entries in Urban Dictionary, so it was definitely last century.

I remember a reference to it in the eighties, instead of saying “I’ve got people to see, things to do”, it was said “I’ve got things to see, people to do”, not so much as in the literal sexual way, but in the double entendre of the word “do” being analogous to the “f” word.

It is used a lot in the UK. ” I’m gonna do him/her tonight ” i think it is just kids, thinking they are adult because they are having sex.

It’s a macho thing.

The 1600s, according to the OED Online:

19. trans. slang. To have sexual intercourse with.

?c1620 in F. J. Furnivall Love-Poems & Humorous Ones (1874) 16 Blushe cherefully whilst I doe thee.

I think it took off in 70’s after the movie “Saturday Night Fever.” At least that is the first memory I have of hearing it.

Before that, I think, “doing” someone was a gangster way of saying, they were going to kill someone. Take a hit, wack them off. Though today, wacking someone off and take a hit has a different meaning. LOL Though I’m not sure if that was before or after Saturday Night Fever. I don’t think it was invented in the movie but it certainly took off after the movie became popular.
But my earliest memory is SNF. So I will have to go with 70’s and it was used mostly in Brooklyn and Jersey. ” You two doing it”, was popular and then it changed to , are you “hitting that”, or maybe they were both around the same time. But hitting that, I think came about in the 80’s.