An expression first coined in the 1983 movie "Risky Business" when supporting character Miles (played by Curtis Armstrong) tells the main character Joel (played by Tom Cruise) "Every now and then, say 'What the fuck.'" meaning throw caution to the wind and take a chance. This form is rarely used today, overtaken by the more prevalant meaning of surprise, disbelief or confusion.

An expression of extreme anger, shock, or disgust. Especially applicable when you discover an unwanted person hiding under your bed for the sole purpose of scaring the crap out of you.

A saying used to express pissed-off-ness. Or it can be used when in disbelief.

Usually said when something totally unbelievable happens, or utterly disgusting.

your lost for a second

Say whenever the fuck you want. USually used to imply confusion. Also where, when, how, which the fuck.

1. A more extreme version of what?, expressing anger or frustration.
2. A mantra recited by Counter-Strike players when their kill streak is broken.