X13 

1) Extraordinary
2) People who are above all

Wow! That was X13 or
Man you sure are X13

X13 by Perfect Gent September 13, 2008

X13 

Noun. One who designs HTML code for food.

You X13.
He is an X13.
X13 is lame.

X13 by SJ February 14, 2003

X13 

Verb. To sing metal songs about people who are but mere puppets in IRC channels. - To ask the state of another person by asking a common question. IE - "How are you?".

I X13.
You X13.
He X13s.

X13 by dictionary.com February 9, 2003

Team X13 

A So-Cal based amateur Extreme Sports Team. X13 participates in a lot of sports including: Mountain Biking, Mountain Boarding, Adventure Racing, Off-Road Duathlons, Paintball, Skateboarding, Drag Racing (Legal), and more. X13 has members in So-Cal and New York and are looking to add more to make the X13 Team grow.

Team X13 is a great team of people.

Team X13 by Perfect Gent August 26, 2006

X-13 

From the west to the southwest.
A street krew mainly from the 505/575 area.

X-13 brought it down sick. They owned.

X-13 by skotkilo January 11, 2009