I felt it creep up the back of my pants.

I got up and brushed off the back of my pants.

He felt around behind himself, and discovered a bundle jammed into the back of his pants.

I don't know what he did with the gun, stuffed it down the back of his pants, maybe.

But it could have been bad since he usually has that big gun stuck in the back of his pants.

He tucked the gun into the back of his pants.

The vampire had stuffed my gun in the back of his pants.

That done, he slid it into the back of his pants and stepped through the door.

Leaning forward, he pushed the gun down the back of his pants.

It was like wearing a "Kick me" sign on the back of my pants.