The action of orgasming so hard that your semen solidifies. The orgasm feels as if passing a kidney stone, hence the term crumb Most of the time crumbing leaves cuts on the urethra, leading to major blood loss. Many people who have experienced crumbing, say that it made the orgasm better despite the major injury. In some cases you may be able to weaponize your penis and shoot your crumb at people to induce serious damage.
Billy: omfg I am about to crumb.
Bobby: Oh no, that’s very dangerous. I might be able to use that delicious, bloody crumb as seasoning for my food.
Billy: *crumbs*
Billy: Darn, my urethra is now bleeding due to my crumby orgasm.
A term to describe a general buffoon - typified by continual tomfoolery, at the expense of surrounding individual's happiness. Interestingly, the word can be used as a noun, adjective or verb.
A crumb whore is the girl at the end of the night that trolls the bar or party for that last minute bang. The girl who looks to clean up the scraps. Once she finds her prize she will make a nibbling noise.