Although 18th century philosophers advocated a somber asceticism to cleanse the four humors, modern medicine has proven the benefits of laughter for phlegm, black bile, and yellow bile. Cleanse three of your four humors with today's Groupon: for $23, you get a premium ticket to Nunsense at the Shimmer Cabaret in the Las Vegas Hilton (a $49.90 value). Shows are staged at 4 p.m. every day except Friday.

Follow Sister Julia through a maze of nunnery wackiness as she accidentally poisons her fellow nuns and the Reverend Mother hosts a variety show to raise funds for their funerals. During the variety show, attendees can relive Catholic–school days through quizzes, cheers, and other audience participation. Brimming with silliness, the show provides an ideal escape from the austere preparation rituals that accompany any seasonal equinox or solstice.

Performances take place in the comfy, intimate confines of the Shimmer Cabaret theater. Premium tickets provide watchers with closer seating than is available through general admission, ensuring pristine views of each performer as they mine for comedy gold like industrious, fiscally conservative gnomes.