South Park is the long running American animated series created by Trey Parker and Matt Stone, first airing in 1997 and known for its crude, fast paced satire. This clip comes from the German dubbed version, where wie geil is a common slang exclamation for something great. Short dubbed lines like this spread easily on soundboards and in meme edits because they are instantly recognisable to fans, easy to drop into any language context, and short enough to reuse as a reaction without explanation.