The Danish word "hvad" means "what" in English. The English words "six" and "seven" refer to the numbers 6 and 7 respectively. In Danish, "six" is translated as [seks](javascript:void(0)), and "seven" is translated as [syv](javascript:void(0)). The phrase "six seven" has also become a meme or slang term, popularized mainly through social media and a song called "Doot Doot (6 7)" by Skrilla. It is often used casually, with vague or playful meanings that can vary depending on context but originally refers to the numbers 6 and 7.