If someone says this phrase to you they are trying to tell you that you give off emo vibes.. This is due to people who have Z's in their name being emo.
You probably have a Z in your name.
Wtf searches the letter z? ARE YOU FUCKIN CRAZY??? but anyways umm "Z" is the last letter of the alphabet :)
OMG YOU SEARCHED UP THE LETTER "Z"
So you're finally done typing in all the letters individually into Urban Dictionary? Nice. Now go do something productive with your life.
You: Just typed Z into UD
Me: Really. Do do something. Anything.
Nice job, you finished looking up every letter on urban dictionary because you were bored
Z
James:Hey Bob What Does Z Mean?
Bob:Its a fucking letter dumbass