horsing
n. 乘马之供应
v. 骑马；为……备马（horse 的 ing 形式）
例句
The lifeguard told my friends and me to stop horsing around in the pool.
救生员让我和朋友停止在泳池周围胡闹。
It's just some kids horsing around.
那是一些孩子在闹着玩儿。
《新英汉大辞典》
Are you horsing with him again?
你们又在捉弄他吧？
