I’m a native of the USA. This saying is still quite common here. Though the slight difference between kissing and making out has to do with intensity and length of the kissing session. I saw mommy kissing Santa Claus underneath the mistletoe last night. (Song lyrics from a popular Christmas song.) The lovers made out last night for two hours in the parked car.

Yes I use this term if I am referring to this situation. Professional teacher www.italki.com/teacherhelpme

Hi Yuu, I’m from Scotland (U.K) It’s an expression that originated from the U.S but we used it here too. I don’t hear it so much any more. I think native speakers would understand it but we tend to just use “kissed” more. I could be wrong but it’s my impression that it’s not as popular as it used to be. Hope this helps.

Generally, on the weekends. When I found people more interesting I often make out with them.