As he has now been persuaded to endorse cosmetic surgery, Gerald Broflovski allows his son to undergo the negroplasty. Meanwhile, Mrs. Garrison is puzzled by the absence of her period. Believing she's pregnant, she cheerfully decides to have an abortion. However, since she does not have ovaries and a uterus, she cannot menstruate, become pregnant, nor have an abortion (it is then revealed that the primary reason for having sex-reassignment surgery was to get pregnant and abort the resulting fetus). She requests Dr. Biber to change her sex back, but learns that the operation is irreversible, as her former testicles have been transplanted into Kyle's knees to make him taller, and her former scrotum had been fashioned into Mr. Broflovski's dorsal fin.