The line is closely associated with YouTuber iDubbbz and his deliberately understated, deadpan presenting style, which turned a simple compliment into a recognisable catchphrase among his audience. Clips of the phrase circulated as reaction audio on YouTube, TikTok and soundboard sites, where editors reused it to punctuate moments that were good, but only just. Its staying power comes from that flexibility: it works as sincere praise, ironic approval, or a polite way of saying something was not terrible.
About this sound
iDubbbz saying hey, that's pretty good in his deadpan YouTube style, used as a reaction sound for approving something surprisingly decent in memes and edits.
This short clip captures YouTuber iDubbbz delivering the line hey, that's pretty good in a flat, unimpressed voice that makes the praise sound almost reluctant. The delivery is slow and dry, with a slight pause before good, so it lands less like genuine excitement and more like a backhanded compliment. That tone is exactly why creators love it: it lets a video approve something while still sounding sceptical, sarcastic, or faintly disappointed. Played over a mediocre achievement, a weird product, or an unexpectedly decent attempt, it turns a small moment into a joke about low expectations.