Have you ever participated in Taco Tuesday? I believe this is something unique mostly to the US, and some people tend to go out and enjoy Tacos and select Mexican dishes.
Many restaurants offer different types of discounts, each and every Tuesday. Here is a sampling from previous Taco Tuesday's.
The customary edible Taco Salad Bowl
Gotta have the silky and delicious guacamole
Carne Asada Combo /w Scallops
Lengua, Carnitas, Shredded Beef and Carneasada
Torchy's 'Austin, TX' Famous Tacos - L-R (Trailer Park Trash, The Democrat, The Dirty Sanchez and Signature Guac
Bring your appetite or 3 friends
Nachos
Chicken Mole Enchiladas
Al Pastor
Menudo, great any day of the week