Perhaps it's fitting that a Taco Tuesday is National Taco Day.
NationalDayCalendar.com said National Taco Day is observed every year on Oct. 4.
A number of restaurants said they are offering deals to celebrate.
Margaritas Mexican Restaurants is offering a foot-long, 2 pound "taco gigante."
While it costs $12.99, $2 of it goes to Team IMPACT, an organization looking to improve the lives of children who face life-threatening and chronic illnesses.
At Taco Bell, customers can enjoy $1 custom drink orders during happy hour each day from 2 p.m. to 5 p.m.
On The Border has 50 cent mini crips tacos.
NationalDayCalendar said tacos predate the arrival of Europeans in Mexico.
Anthropological evidence suggests that the native people living in the lake region of the Valley of Mexico ate tacos filled with small fish.
Spanish conquistadors first enjoyed the meal, but it's unclear why they used the word "taco" to describe it. One suggested origin is the word "ataco," which means "to stuff."
Taco fans have been using the hashtag #NationalTacoDay to post on social media.
Copyright 2016 WFSB (Meredith Corporation). All rights reserved.