Chicken. If anything happens, I'll be across the hall

[the Stooges have been told by the professor about the spy from outer space and are about to settle in for bed] Curly-Joe:
Moe. About that professor... Moe:
Don't pay any attention to what the old guy said about the spy from outer space. He's been bending over those diagrams too long. Curly-Joe:
[taking a rifle that's been lying on the wall and holding it]
Well, just to say, I'm taking no chances. Moe:
Where did you get that? Curly-Joe:
Off the wall. Moe:
[taking the rifle out of Curly-Joe's hands]
Chicken. If anything happens, I'll be across the hall