Look, I don't deny some dudes do that to impress girls, but I can guarantee the vast majority of engine revs has nothing to do with trying to impress girls.
I had a second larger engine installed in my car just to rev at girls. I use the smaller one for transportation to save gas and the engage the big one to get their attention. Once they look over I quickly shout to them how I have everything set up and they are impressed by my frugal nature. I haven’t tried it yet but sex is 100% guaranteed.
You dont necessarily do it to get laid but to impress other people who are into that hobby.