In a study of consititutional psychopathic personalities especially the sexual deviants, it was found during a routine physical examination that the gag reflex was frequently absent. This was a more definite finding in those homosexuals who admitted fellatio. [...]
The findings having been established the test was employed routinely in the neuropsychiatric clinic. Frequently it proved valuable in detecting the malingerer who attempted to obtain a discharge by professing homosexuality. Presented with the gag test findings the soldier would invariably change his story or admit having lied for selfish gains.
"Operation Malingering Cocksucker" is a go.