A noise made by an audience member when an RNG is going off, such as Nightbot on Twitch, when there's a giveaway; an onomatopoeia that sounds like the big wheel on Price is Right.
An experience you go through after a terrible and tragic event in your life. This process of coping involves the consumption of large amounts of Mountain Dew in order to deal with the stress.
"Dude I just heard that Jake's girlfriend broke up with him, is he okay?"
"Far from it, last I heard he's going through a dewpression"
Short-hand for the word floccinaucinihilipilification, meaning the estimation of something as valueless (encountered mainly as an example of one of the longest words in the English language).