An
Internet/instant-messaging term used to describe silly spelling mistakes or typos.
When a person does
something by mistake which makes them seem stupid or clumsy.
Derived from the common mistake of attempting to
type an "XD" face, but instead typing "ZD" while instant messaging or texting.
Eg. 1
"I can't find my
keys..."
"
Dude, they're right here! Are you ZD?"
Eg. 2
Typer 1: I know lol xd xd
Typer 2: xd? I think you mean... ZD ZD? :P