Watch the Avengers cast play "Guess the Bicep"

The Avengers: Age Of Ultron press tour may be over, but there's still plenty of time to enjoy all the ridiculous things the always-charming cast were asked to do

while promoting the film. For instance, MTV's Josh Horowitz showed the cast a series of bicep photos and asked them to guess which Avenger they belong to. Watch as Chris Evans and Chris Hemsworth develop a new-found respect for Robert Downey Jr.