10 MCU Mistakes You Can NEVER Unsee

10. Tony's Magic Mug (Iron Man)

2008's Iron Man is one of the very best movies in the MCU, without question. Now excuse us while we point out something that's wrong with it!

During the sequence where Tony Stark creates his upgraded Mark 2 Iron Man suit, there's a shot of him sat at his computer (above), tinkering away on his latest design. In this shot, we can clearly see that his Stark Industries mug is upside-down on the desk, a clear indicator that it doesn't contain any sort of liquid.

And yet, in the very next shot (below), not only is the mug stood in its normal, upright position, but Tony even takes a swig of the liquid that's magically appeared inside it.

It's a weird mistake for the filmmakers to have missed, because who the hell leaves an upside-down mug on their desk in the first place?! And there isn't even a coaster in sight. Come on Tony, you seriously need to clean up your workspace.