It is when people throw limes at you for insulting something someone likes.
When you say: "Tha Jonas Bros. are WHACKA THAN A CRACKA."
You get delimed to death. Pretty much like stoned to death, but with limes. 4048.
Another example: "OMG. Miley Cyrus is such a slut."
And your mother finds you dead smelling like limes.
And they make limeade out of you.... And they find you at sonic, in the cherry limeade machine.