1.   But she worries plenty when her little boy charges away from the TV set imitating karate chops or making an imaginary pistol go bang-bang.

2.   He made a third, then pulled imaginary pistols from his hip and fired away at Lee.

3.   No more cocking imaginary pistols at his head after botched double axels.

4.   He gesticulated strongly on the bases, calling out runners with a flick of his fingers as if an imaginary pistol were in his hand.