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2.
Something so outlandish that one needs to be very stoned in order to believe it.
'I know those 9-11 conspiracies are doobious because they only make sense when I'm baked!"
by ernie jerkwater November 09, 2011
 
1.
Doobious

To be dubious, thoughtful and unsure of how much marijuana to use when rolling a joint with another brothers weed.
1. Oh cheers for lettin me skin up for you, but i'm always a bit doobious of how much to put in when it's not my own.

Reply: it's no problem, make a baddy fatman that'll blow our knickers clean off.

2. I was a bit doobious of how much to use, so I made a pure Marley badman and didn't think twice about creasin ya ganj.

Reply: sound, ya bugger. let's get wrecked.
by Brazelephantman October 16, 2010
 
3.
Suspected to be under the influence of marijuana. Characterized by dazed demeanor and thoughtful yet inarticulate introspection.
After his 15-minute break, Jay came back looking a tad doobious, as his manager realized before firing his ass.
by petrograd July 11, 2008