These Mistresses Don’t Just Dominate — They Make You Swallow It Too There’s orgasm control. There’s JOI. There’s SPH. But for the truly brave, the devoted, and the downright filthiest — CEI stands alone. Cum Eating Instruction, or CEI, has exploded in popularity within the femdom and JOI community: it’s taboo, humiliating, addictive, and unbelievably…