Whose hands are holding up the cake, and why?

Marvel fans speculate about everything, and after the Russo Brothers posted an "Avengers 4" photo simply called "wrap cake," Marvel-ites launched more speculation.

"Avengers 4" is apparently finished filming, although don't be shocked if anyone returns for reshoots since that's common. The latest "Avengers" movie was directed by Anthony and Joe Russo, who also directed "Captain America: The Winter Soldier," "Captain America: Civil War," and "Avengers: Infinity War," which opens this May.

Here's the beautiful wrap cake they just shared:

Wrap cake.

A post shared by The Russo Brothers (@therussobrothers) on

That's mega-villain Thanos at the top, of course, holding two infinity stones (space and time). But whose hands are propping him up at the right? One is definitely Black Widow's hand. Is the other Vision's glove? There also appears to be a third hand around the back -- perhaps Black Panther's claw -- and maybe a fourth hand, too.

Are those clues to what happens in "Infinity War" and then 'Avengers 4"? It's unlikely the Russo Brothers would post a spoiler right in their own cake but who knows. Bigger question: Did the cake taste good, or did they put style over substance? Answer, Kevin Feige!

Here's one fan's theory to ScreenRant:

"I'd say this gives us a hint at how Infinity war will end with Thanos in possession of the time, space, and reality stones up above in space... while the power, mind, and soul stones are with the Avengers down below on earth. Just my 2 cents of a theory :)"

If he/she is right and you feel spoiled by the intel, blame the Russos and their wrap cake.

The other day, set photos were leaked that offered a lot more fodder for speculation about "Avengers 4." We know it'll be a game-changer for the Marvel Cinematic Universe. Answers on that movie won't arrive until 2019. First, we have "Infinity War," which opens May 4.

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