According to WiseBrother.com:
Taco Bell did a "Comebacks" promo and promised to give out FREE TACOS if either team won a game after trailing at halftime. Which happened on Tuesday, so now anyone can walk in and snag a free taco today.
They're pushing their Flamin' Hot Doritos tacos that just hit their menu again. But you don't have to go that route.
If you walk in, you can also get a free crunchy, soft, or regular Doritos taco. But if you order online, you have to get the Flamin' Hot version. And it can't be delivery, you have to pick it up.
You can snag a free taco all day while supplies last.