Though a horse possesses a strong back and fast legs, its most useful feature is its trivia-packed brain. Add an equine buddy to your Trivial Pursuit team with today’s Groupon to AZ Acres in Plainfield. Choose between the following options:

• For $35, you get a horseback-riding lesson for two (an $80 value).
• For $65, you get a horseback-riding lesson for four (a $160 value).

The equine experts at AZ Acres squire steed bestriders of all abilities during hands-on one-hour lessons. Classes are capped at four students to ensure individualized attention and to cultivate an intimate learning environment that doesn't call attention to the fact that horses can't count to five. Form your own Lone Ranger-Tonto diametric in a two-person saddle-straddling session, or perform mathematically problematic reenactments of scenes from The Magnificent Seven in a four-person outing. For both options, sessions last about one hour, which includes 15 minutes of grooming and tacking oat-powered vehicles before riders toe the stirrups on a 45-minute cruise. With expertise in a variety of riding styles, instructors help pupils build skills and forge centaur-like bonds between their human selves and the horse world without the expense of gene-splicing.