 "wtf" is an acronym for "What the Future" or "What's That Freshness?" or "Why the Face?" It is often used as an interjection to express surprise, shock, or confusion in written text, especially in online forums and chats. The acronym's meaning can vary depending on the context. In the question, it seems like the user is expressing confusion or surprise.

 It seems like you've used a username (@lifer) without context. If you're asking about the meaning of this username, I'm afraid I don't have enough information to provide an accurate answer. If you're using it as an expression of confusion ("what the fuck?"), then I can confirm that it's often used in texting and online communication to show surprise or shock.