Wut da fuh is a stylised spelling of what the fuck, written the way the phrase sounds when said quickly in shock. The clip spread as a short form reaction on soundboards and in edited videos, where creators reuse brief exclamations instead of recording their own. It is often paired with other meme reactions like the vine boom sound for extra impact, but it works alone for pure confusion. Its popularity comes from how instantly readable it is, even without context, which keeps it in regular use for memes, streams and comedy edits online today.