如果说某人在 horsing around, 意思就是这个人在胡闹、闲逛，无所事事。

例句

Stop horsing around and get on with your work!

You can't trust Michael to do anything – he's always horsing around.

请注意

To hold your horses 的意思的别着急，耐心点儿。

Hold your horses! We're not ready to go yet.