Fast food creations come and go, but even some of the most unpopular items live on in infamy on YouTube, where they'll hopefully be enjoyed for generations.

We've assembled some of our favorite ads for dishes of yesteryear, including one with a singing-and-dancing Jason Alexander (the McDLT from McDonald's) and another with Haley Joel Osment as a toddler (Pizza Hut's Bigfoot pizza).

Looking back, it's hard to believe that some of these items were ever made. Why did McDonald's think pizza was a good idea? How did Taco Bell sell Taco Lights all those years? And why was one Dunkin Donuts' commercial so offensive?

Ponder these questions and more as you scroll through the below slideshow.

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  • Taco Bell's Taco Light

    Sometime in the 1980s, Taco Bell rolled out Taco Light, a product named for its "new light-tasting flaky flour tortilla." Taco Light was discontinued in the early 1990s, a decision we imagine had something to do with its misleading name. At first, we thought it was some sort of diet taco -- a notion quickly debunked by a blink-and-you'll-miss-it disclaimer at this ad's 0:19 mark that reads "Not lower in calories."

  • Wendy's SuperBar

    In the late 1980s and early 90s, Wendy's was all about it SuperBar, which offered everything from salad to pasta to tacos.

  • Dunkin' Donuts Minis

    We have a hard time believing this TV spot advertising Dunkin' Donuts Minis would ever fly today -- are we alone in thinking this is incredibly offensive? At any rate, these Minis are a thing of the past.

  • McDonald's McDLT

    Yep, that's Jason Alexander flitting around in this ad for the McDLT -- pre "Seinfeld" fame. The McDLT was a creation of the '80s and came in packaging meant to keep the cool lettuce, tomato, cheese, pickles and sauce separate from the hot meat patty. We're can't figure out why McDonald's found that appealing enough to warrant an entire song and dance, and we'll probably never know.

  • McDonald's Chicken McNuggets Shanghai

    Look, everyone! White people can't use chopsticks! That's the takeaway from this ad for Chicken McNuggets Shanghai -- yes, they existed -- which were really just McNuggets with Asian-inspired dipping sauces. Amazingly, they were served with chopsticks and a McFortune Cookie.

  • McDonald's Chicken McNuggets Fiesta

    McNuggets Fiesta were also a real thing. Watch this inexplicable ad, which like the McNuggets Shanghai, are really just regular McNuggets with different dipping sauces. These ones came with "real South of the border coins!"

  • McDonald's McPizza

    Pizza at McDonald's? It really happened in the late 1980s and early 1990s. There's a reason we don't see on the menu today -- it failed to impress diners used to McDonald's fast service, since each pie was made-to-order and took a relatively long time to make.

  • Burger King's Burger Bundles

    Once upon a time, Burger King was into tiny burgers a la White Castle and Krystal. They were only available for a limited time in the late 80s, after which time we imagine the chain gravitated back toward huge burgers like the Whopper.

  • Burger King's Meat'normous Omelet Sandwich

    In 2005, Burger King introduced the Meat'normous Omelet Sandwich, a variant of its Enormous Omelet Sandwich. It came under scrutiny for its large serving size and high fat and caloric content.

  • Burger King Dinner Baskets

    Once upon a time in the early 1990s, Burger King envisioned itself as a sit-down restaurant with waiters and waitresses and introduced Dinner Baskets. You could order things like the Whopper Dinner Basket, the Steak Sandwich Dinner Basket, the Chicken Dinner Basket, the Shrimp Dinner Basket, the Flame-broiled Meatloaf Sandwich and if you lived in New England, fried clams. Unfortunately (or fortunately?) it didn't last.

  • Burger King's Whaler

    In the early 1980s, Burger King decided to take on McDonald's Filet-o-Fish with the Whaler, which it promoted in this not-so-subtle ad. Take a wild guess who won this battle. (Hint: The Whaler no longer exists.)

  • Pizza Hut's Priazzo Pie

    In 1985, Pizza Hut rolled out the Priazzo Pie, a two-crusted pizza that was meant to be a bit classier than other Pizza Hut fare. (That's why this ad's soundtrack is all opera! Classy.) It came in several varieties, each with a slew of toppings. Despite a $15 million advertising campaign, the pies were deemed too labor-intensive and were nixed a few years later.

  • Pizza Hut's Bigfoot Pizza

    In the early 1990s, Pizza Hut introduced Bigfoot Pizza, which boasted two square feet of pizza, to compete with Little Caesar's large offerings. Can you spot Haley Joel Osment?

  • Pizza Hut's Triple Decker Pizza

    In the mid 1990s, Pizza Hut introduced something called Triple Decker Pizza, which is pretty self-explanatory. It looks a bit like some of the <a href="http://www.huffingtonpost.com/2012/12/26/pizza-hut-cheesy-opera_n_2365205.html">crazier things</a> we've seen overseas.