Thirsty? Here’s your coupon for a free Taco Bell Limeade Sparkler Posted on May 25, 2010 by John Plessel Don’t say we never gave you nothin’. If you want to try Taco Bell’s new Limeade Sparkler (classic or cherry) for free, click here and print your coupon. But be quick about it, ’cause the free offer expires after half a million coupons are redeemed. Oh, we’ve already printed ours.