Duh; a twelve pack. usually of beer but can be soda.
Duude! He downed my whole twelver!
by jimmyvix May 14, 2010
Get the twelver mug.
An individual who believes in and spreads the various myths and hoaxes associated with the termination of the Mayan long-count calendar on and around December 21, 2012
John Doe: Hey sis, did you hear that Woody Harrelson's a 'twelver'?

Jane Doe: A what?

John Doe: A 'twelver'. You know, someone who believes the world is going to end on December 21, 2012.
by The Truth: Live August 1, 2011
Get the Twelver mug.
Noun
When you end up going to bed at/around 12 A.M., because you have too much crap on your plate / can’t focus on your work.

This term commonly applies to students who can’t cope with online school, but works with anything else.
“I had to pull a twelver again, they piled on too much work today.”

“I’ve been doing twelvers all week, when can I catch a break?”

“I had to do a twelver, but I still wasn’t able to get any work done.”
by ⠀ ⠀ ⠀ October 22, 2020
Get the Twelver mug.
This word describes a poor white trash family, or families. The work is dirty dozen......
I saw some d-twelvers out there.
by glock17 - Rick March 17, 2006
Get the d-twelver mug.
A group of twelve of something. Could be hours, cans of beer, a carton of eggs, etc.
I just slept a fat twelver and I'm about ready to die now.
by BradTheDad May 21, 2020
Get the twelver mug.