They often have soft bumps intended to provide further stimulation.

A soft bump, and the door swung back open again.

They settled into idle, then the car dropped with a soft bump as the engine died.

He set the craft down with a soft bump and released the rear hatchway.

There was a soft bump as the van began to move.

The craft settled onto the landing space with a soft bump.

Then there came the soft bump against her window.

A small, soft bump of a sound carried into the bedroom, through the doorway that led to the suite's main room.

I had one hand on Roger's sternum, the soft bump of his heart secure under my fingers.

The hovercraft slowly floated down and settled with a soft bump on the sandy ground.