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1.
Much like deja vu dejabrew is when you start to remember things you did last night while drinking an excessive amount of beer.
I remember now standing on the bar stool pissing into my beer mug while laughing at anything and everything. Oh my God, dejabrew! I won't ever be able to face those people again.
by Prope Fred the First March 31, 2005
 
2.
When you drink a shitload of beer, then you undrink it, if you get my meaning.
No example for deja brew useable.
Deja Brew is just puking up your alcohol.
by Nicholas Gerry March 25, 2008
 
3.
When you do something stupid or embarrassing when you're drunk and don't remember until somebody reminds you the next morning.
"remember when you fell into the canal last night?"
"oh shit, i did didn't i? Deja brew!"
by Lozay January 16, 2010
 
4.
The drink you drink the day after getting waisted that makes you remember all the shit you forgot about the night before. This most likely occurs because you are in a similar mindset.
*slurp* "OH SNAP! Did I really hit on Jeff's girlfriend last night? Damn son my bad. I better call him. Thank god for this Deja Brew.
by Holobiwan March 15, 2010
 
5.
coffee/tea that needed to be reheated in the microwave.
Oops - no instant left, I guess I'll have to settle for a deja brew!
by blyerkit March 06, 2009
 
6.
Place where middle-aged people go to hang out, drink beer, and listen to pretty shitty music. Located in extremely rural Wendell, MA.
Person 1: Yo what are you up to tonight?
Person 2: Well I don't have enough gas or time to get to civilization, so I'm just going to drive to DejaBrew and get hammered.
by JRosselburger21 March 08, 2009