Gary: "Did you guys know that the Alphabet Song and Twinkle, Twinkle Little Star have the same tune?!"
Stef: "Derp der on the der der!"
DJ: "Gary, sometimes I wonder why I hang out with you."
Stef: "Derp der on the der der!"
DJ: "Gary, sometimes I wonder why I hang out with you."
by deejinator27 May 14, 2013

usually said when you already knew what one person is talking about or totally obvious. also said in place of "duh!", "no shit!", "really (note the sarcasim)?" or "well, no kidding!"
by like, dude! May 30, 2003

by Alex Head June 11, 2006

by Steve-O April 24, 2003

Ders is the best person ever.
by kickasskoalax3 October 16, 2008

by THe Funk Trunk Blumpkin Explosion (REKANYZE!) October 20, 2002

a messed up way of saying "there boy", which is thought to be a saying from the east coast of Canada, but has not been proven as of yet.
person one: Hey man whats up?
person two: O hey der by! just raking some seaweed, you?
person one: what in the hell did you just say?
person two: O hey der by! just raking some seaweed, you?
person one: what in the hell did you just say?
by seaweed man March 13, 2011
