Starting the discussion about lunch plans with your coworkers, working to influence the destination and then dropping out at the last minute because you never intended to go.
The Chad: Let's hit up Benihanas for lunch today.
Coworker 1: Ah man, I don't have that kind of time or cash.
Coworker 2: Just ignore him, he's just chadding anyway.
The act of obtaining someone else's credit card information, by either wordtrashing/word which hardly works anymore, or hacking an online store, or simply looking at someone else's card and writing down it's number and exp. date. Once the card info is obtained the person doing the carding will usually have a drop point (an empty house or building) and have the items ordered with the credit card shipped there to make the whole act pretty untraceable.
The subtle art of dropping explicit pornographicplaying cards in unsuspecting friends pockets or members of the public without there knowing.
For them later to find that what they was a there bank cards is in fact a hugely unsettling pornographic playing card. That usually creates a funny fit of laughter or a slightly more *shit-forget I still had them* reaction. Instead of throwing it away the Cock-Carded victim discretely puts it back in there pocket to view later.