A condition, similar to blueballs but applicable to women, in which the genital area is flooded with blood for so long without release that it becomes painful. Can be both a noun and a verb, and used literally or figureatively.
"I was totally going to do it with this guy last night, and we were all making out and what not, then he left, and now I've got a nasty case of bluebox."
"Considering the way the White house owns Congress right now, Harriet Miers is gonna feel totally blueboxed if she doesn't get confirmed."
emptying the contents of one's pockets (and sometimes the clothes as well) into the blue plastic containers at airport security.
When I flew into JFK, they even had me bluebox my comfort blanket.