There was a knock at the door and I jerked involuntarily, adrenaline shooting through me.

Reynolds looked back at the bank statement and she jerked involuntarily.

His callused palms were so hot on my skin that I jerked involuntarily.

Then his finger was inside her, and she felt her hips jerk involuntarily.

His hips jerked involuntarily as her bliss forced him over the edge.

My chest began to jerk involuntarily with the effort of holding in air.

Skidding - Causes the car to involuntarily jerk left or right.

My body jerked involuntarily as muscle tension began to dissipate.

Some jerked back involuntarily, and others laughingly swatted at them with their hands.

Suddenly his right hand jerked involuntarily toward the mirror.