What the hell just happened?
A phrase used to show puzzlement over an occurrence. Oftentimes in the show South Park it is spoken by a character after they have seen a parody of something commonplace in our society. In such instances it often draws attention to how out of the ordinary accepted actions can be.
*group of punk-kids walk and perform a complicated street dance*
Punk: "You just got served!"
Stan: "What the hell just happened?"
Punk: "You just got served!"
Stan: "What the hell just happened?"