This post is one big SPOILER for the end of Guardians of the Galaxy. If you haven't seen the movie yet, you will be spoiled!

This post is one big SPOILER for the end of Guardians of the Galaxy . If you haven't seen the movie yet, you will be spoiled!

Benicio Del Toro as Taneleer Tivan

Marvel / Via marvel-movies.wikia.com

Ever since Samuel L. Jackson turned up as Nick Fury after the end credits of 2008's Iron Man, Marvel Studios' very first film, the post-credits teaser has become one of the studio's trademarks. Almost all Marvel Studios movies since have included a quick glimpse at what's to come in the studio's subsequent films, including April's Captain America: The Winter Soldier, which teased both The Avengers: Age of Ultron (with first looks at Quicksilver and Scarlet Witch) and Captain America 3 (with Bucky Barnes' Winter Soldier on the loose in Washington D.C.).

Which brings us to the end credits teaser for Marvel's latest film, Guardians of the Galaxy. (Final warning: Those SPOILERS start here.) The camera cuts to the lair of Taneleer Tivan (Benicio Del Toro), aka The Collector, who is nursing both his wounds and a drink, with his precious Collection in shambles after his most recent attendant killed herself by grabbing the Infinity Stone rather than continuing to work as his slave. Then, a dog comes over, wearing some kind of space uniform, and begins to lick Tivan's face.

"What do you let him lick you like that for?" asks a gravelly voice.

Next, the camera cuts to a cartoonish duck, still sitting inside his wrecked container, nursing his own cocktail. "Gross," says the duck.

Wait, what? you ask yourself.