(transitive) To sexually stimulate the genitals.
Example: Used other than as an idiom: play with.
1898, Winston Churchill, chapter 4, The Celebrity:
One morning I had been driven to the precarious refuge afforded by the steps of the inn, after rejecting offers from the Celebrity to join him in a variety of amusements. But even here I was not free from interruption, for he was seated on a horse-block below me, playing with a fox terrier.
The boy was playing with his toys.â€Ž
2011 February 5, Chris Whyatt, â€œWolverhampton 2-1 Man Utdâ€, BBC:
Breaking into the right side of Wolves' penalty area, he played with Elokobi over and over while ignoring both Dimitar Berbatov and Wayne Rooney as they lurked in the centre with arms aloft.
1992, Patrick Suraci, Male sexual armor page 169
She laughed and started to play with me. I started getting hard and really got turned on. I liked her giving me all the attention. I begged her to suck my cock. I was ready to explode. She went down on me and I had a terrific orgasm.