Anesthesia

It's a maneuver called Sellick's maneuver or just "cricoid pressure". But very few people do it the way it is "supposed" to be done, it makes intubation harder and more dangerous and there is no evidence at all that it does what it is purported to do which is prevent gastric contents from traveling up the esophagus and making their way into the airway. You'll be asked to do it anyway.

What does help the laryngoscopist (and patient) is a maneuver called the "BURP" maneuver where in the assistant takes her thumb and forefinger and presses firmly Backward, UPward and Rightward on the thyroid cartilage (not the cricoid cartilage as some will tell you). What this does is lines up the glottis into the laryngoscopists view and facilitates intubation.

Only perform these maneuvers when asked to.

Most people perform these maneuvers incorrectly so ask your anesthetist how to do them correctly.

Cricoid. The fact they threw in it's a Cystoscopy is there to throw you off and irrelevant.