Looking for laughs? Get thee to a nunnery!

The Book of Bad Habits takes us behind convent walls for a hilarious look at nuns like you've never seen them before. Absolutely authentic, unretouched vintage photos offer glimpses of nuns at ease and in action. Wry, clever captions complete this unholy alliance of words and pictures. Not to worry, Mother Superior—it's all harmless fun. After all, all pray and no play makes for a very dull day.

Nuns with guns! Nuns with pool cues! Nuns with cigarettes, footballs, fire hoses, and flying fists!

Holy Mother! Have these sisters lost their religion? Hell, no . . . they're just nuns having fun, and this book catches them in the act.

At risk of attracting a lightning bolt from the blue, author Patrick Regan has rifled through the Vatican's photo files and unearthed an eye-opening array of candid snaps of holy sisters doing some rather un-nunlike things. Paired with irreverent (to say the least) text, this book is guaranteed to induce "church giggles" of the highest order.