This is a shorthand for the overused expression, "Have a good one," (derived from the even more overused expression "Have a good day") and is slowly catching on to be much more hip!
As I drop my friend off and he leaves the car, I shout "Have one!"

He replies, "Word...later!"
by Robintexas April 13, 2007
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short for "have a good one," which itself is, of course, short for "have a good day."
Johnny: "See you tomorrow Bill"

Bill "Have one!"
by Watchful September 15, 2008
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This is a shorthand for the overused expression, "Have a good day," and is slowly catching on to be much more hip!
As I drop my friend off and he leaves the car, I shout "Have one!"

He replies, "Word...later!"
by Watchful April 5, 2007
Get the have one mug.
a phrase used out of joy for something; excitement referring to "creaming" oneself/ejaculation, etc
Oh man, I can't wait to see this super hot pop star at the virgin records signing this morning, i think i might have one!
by JoeMan September 13, 2007
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when someone asks you a question or sends you a bullitin on myspace about what is your favorite color, song, food, species of bird... etc... and you don't have one.
Myspace Bullitin: What is your favorite color?

Person: Umm, don't have one. O.k. give me a break already it's just a stupid survey.
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I put a lock on your door so your mum can't catch you having one off the wrist
by Wanglerz July 23, 2017
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To be killed, or otherwise gotten rid of. From the practice of punching a hole in a ticket in order to cancel it.
Trotsky became a liability, so Stalin had his ticket punched.

It's a raw deal to have one's ticket punched the day before Christmas.
by Annabellastasia March 31, 2011
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