Mistress Sparrow got a brand new sub to play with. Her name is Fatti Martian and she is a black slave girl. Sparrow wants to train her new slave with some silencing mouth gags and humiliating ass spanking. The first gag Ms. Sparrow puts on Fatti is a black ball gag. Fatti is ordered down on the floor, ball-gagged and kneeling, where she is taught to obey her high-heeled mistress. Sparrow uses a riding crop to make Fatti sit how she wants her to…