Back in Jamaica when the woman had their periods they did not have disposible towels, they would use clothes and then wash then, when they were hung up to dry, when they were on the drying line they were called Bumbacluts. It is a very rude word in Jamaica, like cunt
(noun) fuck; damn, mothafucka........... it originated from the old times in Jamaica when it was refered to the cloth that women used to cleanse themselves with when they had their period. If a women despised you then she would throw her cloth at you symbolizing that you were the epitome of scum and were "cursed".As for the "clot" its a mispronounciation of Jamaicans because of their lack of the sound "th" hence clot=cloth. See bloodclot.