I shot my boyfriend with an actual gun to see if it was true that "you can dodge a bullet if you watch the gun's muzzle"

A man reading manga said: "You know, bullets... if you watch the gun barrel carefully enough, you can dodge them." The woman who heard this laughed, saying "You've read too much manga. There's no way you can do that," but the man stubbornly insisted "I can." And then, the woman finally decided to shoot the man with a pistol...