1. To nonchalantly engage in a situation without trying to change it or assert control over it. Can you relax for even five minutes? Just go with it, OK?

2. To follow along with someone or something; to act in accordance with another's actions, especially when their motive or goal is unknown. If the cops show up at the house because the party's too loud, I'll come up with some logical excuse, and you just go with it. I'm going to play a prank on Jenny when she walks in. Just go with it, OK?