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 Star-Spangled Banner.
Trapped Under Ice.
Quicksilver
A. Polaroids.
Tetris
A running gag.
Because a black widow has no husband.
My husband be dead
He gives it a valenshine!
Because they built their stuff with reads!