petting party
dated Social gatherings in which couples engaged in amorous kissing, caressing, and fondling. I was shocked to learn that my grandmother—one of the most prude, conservative women in my life—used to go around to petting parties back in the 1920s.
petting-party
n. a session of kissing and caressing. I just want to watch the movie. I didn’t come here for some teenage petting-party!