Cumable means: This is the definition of ‘fine ass bitsches’, which can be used for intercourse. In order to prove she’s cumable, the unsuspecting male will often run behind the female cumable and start dry humping. The male may then begin to have an affair with her by any means and will then cum in her. You can use this method to determine if a bitch is capable of having an orgasm. There are a few variations. One variation is the grading system, where males ask if they are capable of making female cum. (in Community Dictionary, added by SmellyboofMesial)