From Longman Dictionary of Contemporary Englishdo itdo itinformalSEX/HAVE SEX WITH to have sex – used humorously or when you want to avoid saying the word ‘sex’ → do
Examples from the Corpus
do it• True to script, they did it.• However, we have certain things and that was part of your, your agreement was that you would do it.• I reach the end of the beach too quickly so I turn around and do it again.• Maybe we will do it all again in another six months???• It was a big step to do it and I wanted to do it for Freddie.• People do it because they see other people do it.• You did it! Congratulations!• I had to tell the officer about these people I saw doing it in the park.• We did it! We won the cup!• The difference is that, one, before, we did not do it wholesale.• Mr Regan does it with a shillelagh. 