Flew with a Captain at my prior Regional airline, whom married a flight attendant, and wore his Captain uniform to the wedding. (Similar to someone wearing their "Military Dress uniform" instead of a tux.)
En route he used to brag about being able to teach someone Morse code in less than 20 minutes, and giving the reason why spiders' legs curled their bodies when they died. (Answer - Spider has an eight ventricle heart, one for each leg, and when they died, their legs each curled around its body.)
GJ