Some folks like their margaritas on the rocks, just as some folks enjoy a 10-inch spike to the upper thorax. Those rocks-in-their-heads margarita masochists will argue that frozen margaritas are an abomination thought up by girly men. Back in the day, they'll point out, we didn't have blenders, so margaritas would have been served chilled or on the rocks at best. Perhaps, but then there's this little thing known as "progress," of which we're so fond. Since the invention of the margarita back in the 1930s, progress has come to improve our lives with such marvels as air conditioning and frozen margaritas, both of which are available for your pleasure at Z'Tejas. Its eight-ounce Chambord margarita is particularly wicked -- a blend of Sauza Gold, triple sec and sweet and sour, swirled into Chambord liqueur that makes them so potent that imbibers are cut off after three drinks. While the knuckle-draggers are sipping theirs on the rocks (and probably trying to start a fire with two sticks), we'll be on our third Chambord maggie, enjoying a lovely yet profound buzz.