The male version of a period; When the male body (specifically the dih) begins to cramp up and hormonal activity increases. Causing males to become more emotional and irrational.
A sunburn or suntan focused on the left arm. It is caused by the left side of the body being the only half that gets exposed to sunlight while driving. Presumably, it would be located on the right side of the body in countries where they drive on the left side of the road.