And Knuckles

''And Itchy and Scratchy and Luigi and The Chocolate Factory and You. Someone get on that!''

When someone is added in as an awkward plus-one to something, they get And Knuckles'd. And Knuckles is a reference to Sonic 3 and Knuckles and how Knuckles' name was placed after the 3 and not before as well as the meme that was based on that.

Examples of And Knuckles (and UnTrash!)
Steven Universe - In the intro of Steven Universe, it's sung at the end "That's why the people of this world believe in Garnet, Amethyst, and Pearl", then Steven jumps in at the end and yells "and Steven!".

Teen Titans Go! - What We Learned At Camp. At the end of the episode, Bumblebee is accepted as The Sixth Titan. Cyborg and Beast Boy then Break The Fourth Wall by saying it's time for a new intro to the show they're in. The new intro is very similar to the original except Bumblebee and the phrase "and Bumblebee!" are awkwardly forced in at certain points of the intro. This version of the intro isn't used, but Bumblebee does dance with the other Titans at the end of it.