do it

do it

vulgar slang To have sex. A: "Did you two do it yet?" B: "Gosh, Tina, could you be any more crude?"
Farlex Dictionary of Idioms.

do it

Vulgar Slang
To engage in sexual intercourse.
American Heritage® Dictionary of the English Language, Fifth Edition.
See also:
  • on one's
  • on someone's
  • (Have you) been OK?
  • pillow-biter
  • out of one's
  • (I've) got to go
  • #dead
  • save someone's skin
  • (something) blows
  • other than
References in classic literature
Tom said it was tough to have to keep mum now; said we would be heroes if we could come out and tell all we knowed; but after all, it was still more heroic to keep mum, there warn't two boys in a million could do it. That was Tom Sawyer's idea about it, and reckoned there warn't anybody could better it.
Tom Sawyer Detective
I can do it, for I have May Chester as a model, and I'll improve upon her.
Little Women
He wanted me to challenge that derned Italian savage, and I wouldn't do it."
Puddnhead Wilson
If he did not do it, then the adventure would be proved to have been only a dream.
Tom Sawyer
And one's very liable to do it in their case--both having mouths, you know--"
Sylvie and Bruno
"If I'm going in for painting I must do it thoroughly, and it's only in Paris that you can get the real thing."
Of Human Bondage