The way to end any and all conversations, discussions and arguments. The "whatever" of the new millennium.
Jane: "Do you think Obama is too thin to be the new President?"
Joe: "Sure, why not?"
Dan: "Hey, will you come and help me with some examples for this entry on Urban Dictionary?"
Leah: "Sure, why not?"
Dave: "Do you think that God, or perhaps even some higher spiritual power, does, actually exist?"
You: "Sure, why not?"