What's "horsing"?
Here's an extract from The catcher in the rye;
I was feeling sort of tired from the trip to New
York and all, and I started yawning. Then I started horsing around a little
bit. Sometimes I horse around quite a lot, just to keep from getting bored.
What I did was, I pulled the old peak of my hunting hat around to the front,
then pulled it way down over my eyes. That way, I couldn't see a goddam
thing. "I think I'm going blind," I said in this very hoarse voice. "Mother
darling, everything's getting so dark in here." "You're nuts. I swear to
God," Ackley said. "Mother darling, give me your hand, Why won't you give me
your hand?"