Are you good at lying?
Clearly Mark Ruffalo is not because Jimmy Fallon hooked him up to a lie detector test to try to find out some information about the upcoming movie Avengers: End Game.
Mark really struggled through this test and while he was trying his best to not reveal anything, his squirming said it all for itself.
Let's just say, we are REALLY excited for this upcoming movie!
You can check out the video below to see Mark go through this lie detector test and see what he reveals: