l33ching
when you think you're being smart by using numbers and letters but you're just being silly
you l33ch and say "l33ching 1s 4 1d10t" and it's just a joke
you try to l33ch and type "u r 0n3 0f 0ur 0wn" and no one gets it
you l33ch and say "gr8 2 c u" and no one knows what you're talking about