Noun - A day in which "Taco Tuesday" and "Thirsty Thursday" coincide, creating an explosion of flavorful spices and liquid joy. Satisfy your hunger. Quench your thirst. The best of both worlds.
Verb - The act of participating in or experiencing the noun version of the word.
Bob: "Man, this spicy taco is making me thirsty for some Dos Equis."
Bill: "Well lucky for you it's Tasty Thuesday! Go grab a beer and some more tacos at your local cantina!"
Ben: "Yo guys, wanna Tasty Thuesday it tonight?"