From the original UK version of Adam Kay’s This is Going to Hurt: Secret Diaries of a Medical Resident:
Asked to review a patient in labour ward triage and repeat a PV as the midwife is uncertain of her findings. Her findings were of cephalic presentation with cervix 1 cm dilated. My findings are of breech presentation, cervix 6 cm dilated. I explain to mum that baby is bottom-down and the safest thing to do is to deliver by caesarean section. I don’t explain to mum which part of the baby the midwife has just stuck her finger in to 1 cm dilatation.
Good medical humor is rare.
Had the baby’s rectum been hurt in that case?
No that would not cause any harm. If it was anything other than harmless, it wouldn’t be funny.