A priest, a rabbi, and a nun ...

A scene from Betty White's Off Their Rockers

So, what's their story? What drew a priest, a rabbi and a nun to the beach? Judging by the middle portion of their dress they each individually planned time at the beach. Was it a chance encounter? Or did they plan to meet there? Is it part of a summit meeting of some sort?

What if they're siblings?

What if they were childhood or college friends?

What if none had planned a religious life when they last knew each other? What were their plans and what series of events drew them to the choices they ended up making?

What if two of them were lovers at one time? Which needn't be a traditional combo. ;-) What if it was a love triangle?

What if they're aliens practicing to be human? What if this is a just-a-bit-off simulation for aliens to practice or play in?

(Feel free to imagine non-Judeo-Christian religious callings.)