No clear original source is attached to this clip, so its life has been mainly on soundboards and in short form edits where the phrase itself is the joke. Users share it under the misspelled walcome spelling, which matches how the line sounds and makes it easy to find as a reaction. It keeps circulating because the reply is instantly understood, works without any setup or context, and can be dropped into chats, gaming moments and comedy videos whenever someone expects a normal you're welcome.