The tortilla's thinness makes it ideal for folding, sliding under closed doors, and illustrating theories that the Earth is flat and made of corn. Voyage to the edge of deliciousness with today's Groupon: for $20, you get two entrees and two house margaritas at Sandbar Mexican Grill (up to a $42 value), with locations in Chandler, Peoria, and Phoenix.

Sandbar Mexican Grill's culinary crew dresses authentic Mexican entrees with piquant seasonings in a laidback beach-house atmosphere. The extensive menu sings paeans to traditional provender, such as the carne asada fajita ($13), which sizzles its way to diners aboard a platter of sautéed vegetables. Herbivores or the herbi-curious can tuck into the california burrito ($6), stuffed with lettuce, crispy potatoes, and an avocado cream sauce. Savor shrimp tacos ($11) charged with adobe spices or a chicken burrito ($9) bursting with an enthusiastic fanfare of cotija cheese and pico de gallo. Sandbar's El Diablo burger ($9) dons a fiery force field of pepper mayonnaise, jalapeños, and pepper jack cheese, making dinner dates with snowmen uneasy.

Diners can stir one of Sandbar's classic margaritas ($7), frozen or on the rocks and infused with orange cordial and freshly imported sweet-and-sour mix, while salsa dancing across sand-strewn floors. Thatch-and-tin roofs shield guests from wind, rain, and skydiving cacti as HD televisions glow in Sandbar's lively interior.