The line comes from American YouTuber Dashie, known online as DashieGames and DashieXP, who has opened his gaming and comedy videos with an exaggerated 'what's up, it's Dashie' greeting for years. His over the top delivery and frequent rage filled playthroughs helped the intro become instantly recognisable to his audience. Clips of the greeting were later ripped into clean and distorted versions for soundboards and edits, where it spread beyond his fanbase as a generic hype entrance sound for streams, memes and short form video.
About this sound
Clean clip of YouTuber Dashie shouting his stretched out what's up intro from his gaming videos, used as a loud greeting and reaction sound for edits.
This is the clean version of Dashie's signature greeting, a short burst where he stretches out 'what's up' before announcing himself. His voice is loud, high energy and slightly distorted from yelling close to the mic, which makes the two seconds feel much bigger than they are. There is no music or background noise, just the raw intro line delivered with exaggerated enthusiasm. It lands instantly as a hype moment, the audio equivalent of kicking a door open and announcing you have arrived, which is why it works so well as an opener.