A slight injury usually resulting in a few tears but no lasting damage. Also, in the past tense, used to describe the action of sliding down stairs on your bottom.
Awww....you fell and got a bumple on your head. Let me kiss it and make it all better.
Its that thing that you think is a pimple on your one night stands ass or genital area but its really a gross cross genetic form of herpes or some shit. thats what we call the bumple possibly spreads to other areas quite rapidly.