adj 1. absent minded, inattentive. 2. stupid. Origin: probably a shortened version of the phrase "out to lunch" which has a similar meaning. ("Dude, you're so lunching.") Submitted by Brian, Herndon, VA, USA, 03-02-1998. absent minded
LUNCHING
Meaning of LUNCHING in English
Slang English vocab. Английский сленговый словарь. 2012