"One Never Knows When A Homosexual Is About... He May Appear Normal"
Remember, this was a public information film from the 1940's, before the great advancements made in WWII in Gaydar technology were generally available to the public.
Thanks to Del, who just made several "off-color jokes" to me. But I didn't mind. I've heard such jokes before, and it made me feel big to so quickly win the confidence of an older person.