There was a quarrelsome quack at trivia last night. The question in question? "At which bone does the leg end?" Naturally everyone wrote "Pelvis," including us.
Not the doctor.
Slapping his thigh and pointing to assorted body parts, he gave an impromptu demonstration to inform the rest of us punters that the leg actually ends at the knee. The thigh/femur is - allegedly - the upper part of the lower limb, while the leg/tibia/fibia is in fact the lower part of the lower limb.
He wasn't ... ahem ... pulling our legs.