horse aroundvi phrasalphrasal verb, intransitive: Verb with adverb(s) or preposition(s), having special meaning and not taking direct object--for example, "make up" [=reconcile]: "After they fought, they made up."
informal (behave in a silly or frivolous way)
(孩子)胡闹 hái zi hú nào
疯玩 fēng wán
While the parents made dinner the kids horsed around at their feet.