Today's illustrious band:

Praydar

Brought to you by El Queso Grande. Mr. Queso, actually. (Linguistic debate sidebar for Spanish speakers: El Queso Grande is actually a woman. Would it be more proper to refer to her as La Quesa Grande, using the feminine article and noun?)

You've heard of gaydar, right? That's the ability, often possessed by a gay person, to spot other gay people in a crowd. Well, come to find out ex-clergy have a similar sixth sense: praydar. El Queso's husband, once a priest-in-training, claims he can spy other former seminarians at a glance. El Queso also has several friends who are ex-nuns or ex-nearly-nuns, and they say the same. Is there some sort of secret signal or club handshake that only the initiated are trained to recognize? Or do people gain special powers of seeing once they enter holy school?
Has anyone ever belonged to an organization that really did have a secret signal for recognizing fellow members on the street?