A term coined by Strong Bad of Homestar Runnerfame meaning an offspring that is awkward, peculiar, or simply unable to fit in.
"Send your cool son off to join the 'On-Point Kings' he'll have to be... jumped in, your fat son off to join the 'Municipality', he'll have to be... pooped in, and ship your stepheaded red-child off to join the Homestarmy. He'll want to be... jumped out."