What movie am I thinking of?

So it's an action comedy and I remember this one scene from it. This guy is pointing a gun at another gun and explaining his plan to him but then this kid points a golden gun at him and says stuff like 'wow you had to be the classical villain and waste all that time telling your plan' then a guy points the gun at the kid and says something like 'you ain't too smart yourself kid' or something like that. I know it's a vague description but does anyone know what I'm talking about.