1. Used after becoming aware of an unbelievable or astonishing subject. Acronym for "What The F---?!"
2. In cases such as Amy the Slasher, it may also represent "Wells That Frequent?!" After one becomes aware of the well in her backyard she uses to dump her victims. The very notion of a well in a backyard prompts one to exclaim —— well, you know*. For more, see oh-so-convenient.
*Note: For those whose minds run at a lower rpm, that which one would exclaim here is not "Well, you know." Indeed, it is "wtf?!"
1. At the restaurant part of the date, Shannon complains to the waiter, "Waiter, there's tomato in my hair soup!"
Mike exclaims, "Wtf?!"
2. After seeing 138 wells along the countryside on the road trip, a frustrated Jason bursts, "WTF?!"