Excessively hard nipples, to the point of possibly poking a whole through one's shirt. Can be possessed by males or females. Usually brought on by the cold and often during very inappropriate times. Can be spotted from distances of up to 20 ft, even through a ribbed sweater tee
Guy#1: Wow, it is extremely cold out here.
OH WISE ONE: You're not kidding...I can see your kypples. Very impressive.
Guy#1: Thank you.