Because it's made out of vibranium.
Interactive Joke of the Day Mug
Coffee Mug
What's Captain America's shield made of Vibranium. What's Hawkeye's shield made of Quicksilver.
Vibranium. What is Hawkeye's Shield made of **Quicksilver**
A radicalized Muslim braaaaaaaaaaaaaa
It can turn "No, no no!" into "mmph, mmmph, mmmph"
Polaroids.
A Star-Spangled Banner.
Because he's Russian
Because a black widow has no husband.
My husband be dead