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Drug Assisted Studying. The act of taking a drug meant for individuals with ADD or ADHD in order to help one focus and get their homework done in a fast and efficient fashion.
D.A.S. at 3:00 a.m. iis the college way of life.

Do not go on social networks when D.A.S. has kicked in or you will be on that website for the next 6 hours.
by GinjaNinja108 September 13, 2011
The origin of "Das" stems from the expression "that's a good one." It's commonly used in response to someone saying something extremely stupid that is complete nonsense. Technically, Das means "that's" which is a shortened version of the above expression.
1. Some cocky mofo: "I'm going to win the Heisman trophy next year as a freshman."

His friend: "That's a complete fuckin DAS!"

2. Same cocky mofo: "I've got a huge dick"

Everyone within earshot: "Ummm..DAS?!"

3. Cocky mofo's sister: "My big brother is the coolest!"

Her best friend: "DAAASSSS!"

4. Me: "Wow, Das got the Urban word of the day!!"

Dad: "Holy god, that's a friggin Das!"
by Mr. Vades January 01, 2012
An acronym for the commonly used phrase "Dumb As Shit"
Is this guy das or what?
by bbluntz May 19, 2011
1.) a very inefficient process or when used to describe a person who is inefficient
This process is DAS!
by macq March 30, 2011
das- meaning, "disgusting as shit"
-dude i went to go take a crap in my girlfriends bathroom.

-bro thats das.
by hipppppppiyyyyyyyy February 27, 2011
acronym for dumb ass slut
What a fuckin' DAS.
by twentyconley October 30, 2011
A shortened word for thats
"das sensational" or
"das really great"
by coate June 06, 2004