Chevy's definitions
Update: Evidently it is a made up word. From an interview with Variety -
“I have a friend who calls himself Dr.Lacubrious,” Mraz said. “He’s like, it means lazy, its another word for lackadaisical. We couldn’t find it anywhere, and one day he left a message on my machine, and he’s like, you won’t find it in the dictionary because I made it up. And I thought it was very appropriate, because it is based on a friend of mine who’s the king of one-liners, who’ll say anything to get what he wants. And he’s usually pretty smooth about it.”
“I have a friend who calls himself Dr.Lacubrious,” Mraz said. “He’s like, it means lazy, its another word for lackadaisical. We couldn’t find it anywhere, and one day he left a message on my machine, and he’s like, you won’t find it in the dictionary because I made it up. And I thought it was very appropriate, because it is based on a friend of mine who’s the king of one-liners, who’ll say anything to get what he wants. And he’s usually pretty smooth about it.”
by Chevy May 7, 2005
Get the lacubriousmug. 
Get the NOSmug. by Chevy June 28, 2003
Get the Fordmug. by chevy May 27, 2004
Get the ZoLtRiXmug. 
by Chevy July 5, 2003
Get the Queefmug.