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(1.)Someone Who thinks they knew how to do something but actually just screwed everything up. (2.)Someone who goes into a serious explanation of doing something fairly simple or unimportant like how to drive a bumper car. (3.) When something just doesn't work how you want it to. (4.) an Idiot...Nub
for 1st def:

Person: Man I really need to fix my computer.

Expert: No problem I'll help.

Person: You freakin EXPERT! You just erased my hard drive.

2nd def:
*In line to ride the bumper cars*

Expert: Now son you need to get a little distance so you can pick up speed then you want to hit them in the side.....ect.

*also in line behind expert watching him talk to his son*

Person: Expert bumper cars! Dang leave the kid alone.

3rd def:

*trying to call a friend and your cell phone says the network is busy* after the third time....

Person: expert network busy..Dang!
or when friend answers you can call him expert network busy!
by Ronnie Hill May 02, 2006
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Ex (a former) spurt (a drip under pressure)
adam "don't worry eve I'm an expert"
eve "lol what; ex, a former spurt; a drip under pressure
by jahooley April 01, 2009
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Someone with a blog or a dude with an opinion.
Daily Kos, some dude on the street, the old guy next to you at your cousin's wedding, the guest "expert" on whatever talk radio show you're listening to.
by B.Dizzle April 26, 2007
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Dr Mc Calm an expert on genetically modified foods and consultant for the FDA assures us that these products are safe.
by bittersweet50 August 18, 2009
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