When you have huge meal at lunch and are comletely useless when you go back to work.
Jarek was so lunch drunk that afternoon he could barely form a sentance
by rostafer January 7, 2009
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A term to describe a unplanned and sometimes sudden drinking session entered into while on ether a "casual lunch" or during "work lunch".

This occasion is mostly accompanied by the quote of the Alan Jackson song "It's Five O' Clock Somewhere"
person - screw this job im gona go get drunk
workmate - Drunk Lunch?
person - yep
workmate - ow hell it's five o' clock somewhere
by cheeky bull January 20, 2012
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idiots that decide it would be a good idea to go and get wasted during lunch at school and then come bak and stay drunk and cover up poorly
Slut#1: lets go get wasted
Slut#2: hell ya we'll be cool
slut#1: ok
by cracky the crack head May 4, 2005
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