4) Pepper’s T-Shirt
Unfortunately for Peter, Tony doesn’t think he is ready to take on the Vulture – or “flying monster guy” – and tells him “there are people who will handle it.” During this scene, Peter is seen wearing a T-shirt with a physics joke on it. It features two cartoon atoms with speech bubbles. The first says: “I lost an electron.” “Are you positive?” the second replies. You can buy it from SnorgTees.Com here.
Oddly enough, this shirt was previously seen in Iron Man 3, as worn by Pepper Potts while in bed with Tony. I think we have to assume that this is not the exact same shirt, otherwise it raises too many questions as to how Peter got it.
Jon Favreau can also be glimpsed in between Tony and Peter, in character as Stark’s bodyguard Happy Hogan. Funnily enough, he was last seen in Iron Man 3 too.