Definition

Mock baby-talk used to call someone out for complaining or whining about minor inconveniences, implying they're acting like an infant. It's the verbal equivalent of offering someone a pacifier when they won't stop griping about trivial problems. Maximum effectiveness when delivered in an exaggerated baby voice.

Example Usage

"You're complaining about a paper cut? Uh-wah, do you need your bottle?"

Source: Urban Dictionary (https://www.urbandictionary.com/define.php?term=uh-wah&defid=7418916)