adj. Cocky or arrogant when one needs not be. It is used specifically to describe one who makes claims that are either untrue or extremely exaggerated.
Oz: Hell yeah, I'm a cage fighter. I wrestled a fucking dragon to the ground, man. To the ground!
Danny: Don't be so boobjumpy. Dragons don't lose.
Danny: Don't be so boobjumpy. Dragons don't lose.
by Swoffword April 21, 2011