Mandibular Puns

In a room together with my sister and parents after not having seem them for a long time. Sister places her fingers a little under my ear (male) and is explaining to my mom what she has been learning in med school, "This the mandibular angle...".

My dad, also a doctor, then places his fingers on the same place on my sister's face and says, "and this is the womandibular angle". Cue hysterical laughter and me and my dad high fiving each other.