The almost immediate and completely unbearable sensation of liquid running down the nasal cavity onto the upper lip (or down the throat) with no way to stop it and panicking from the anxietious sensation. Similar in many ways to water boarding in that the feeling of the liquid quickly becomes frightening and the victim begins to panic.
Getting a runny nose while your hands are tied and you are unable in any way to wipe the drip from your nose/upper lip. The ticklish sensation can often send a person into a mild panic attack.
Technical terminologyness: Otolaryngological Water Torture