When a verb is followed by 一下, it implies the action lasted or will only last a short time. You're, technically, doing something briefly, for just “ a little bit".
Subject + Verb + 一下+ Object
Just follow the verb with 一下, and you're good to go.
Examples
请 你 等 一下。 Please wait a little bit.
我 用 一下, 好 吗？ Could I use it for a little while?
我 用 一下, 好 吗？ Could I use it for a little while?
一下 is also often used after a verb to relax and soften the tone of what you’re saying. It's not quite sugarcoating but it certainly helps you sound less imperative.