This is a severe profanity in Jamaican Patois, thought to originate from the supposed unsantity of the female period (blood clot). It can be used in many contexts, especialy to back up a strong statement. See also Rassclat, Rass
Someone who is feeling an intense urge to cause suffering and massacre, but used in a masochistic way, such as self-mutilation. Bloodslut can also be a misspelling of the word bloodlust.
"Y'knowTina down the street? I heard she was a bloodslut; I didn't know she was into that.