Flexed

Tom flexed his muscles.

He flexed his muscles.

Johnson flexed his political muscle, strong-arming the other congressmen into signing his proposal.

Tom flexed his arms.

Tom flexed his biceps.

Tom flexed his muscles in front of the mirror.

He realized she was being sarcastic when she flexed her fingers for flamboyant air quotes.

The Mars rover flexed its robotic arm today for the first time since before launch in November 2011.