1.) an exclamatory expression used for showing extreme excitement or pumpedness
2.) also incorrectly used for saying "check it out" ... but thats wrong.
other words can be thrown in between the "chickadee" and the "dow"
-- originated in Burlington, MA. primarily at the skatepark.
"chikkideedow dude i just landed the ill tre-flip!
"dude chickadeedow this sick beastie boys song"
"chickadeefuckindow dude that was nasty"