I was a teenager in the 90s, and the word for casual, semi casual, or run of the mill sexual congress was "shag", as in "shagging" "have a shag", "quick shag", and "shagged em".
I just think, this word has had its day. It has connotations with vintage rugs, thick carpets, unruly beards, and perhaps panting sheepdogs, that are uncomfortable. Other words exist. I don't want to be the self declared Word Police, and appreciate there will be other points of view on this very important topic, but please can we all consider never using it again?