An involuntary gesture characterized mainly by a shoulder twitch and outstretched palms of the hand. Always accompanied with a Shatner pause. The gesture received its namesake from William Shatner's portrayal of Captain James T. Kirk in Star Trek, who incorporated this into the character.
Can also be applied in real world situations to bring emphasis to an upcoming statement.
Proctologist: Ok get ready, you may feel some pressure.
Patient: Please doctor, I'm *Shatner shift* accustomed to being under pressure