Crash Dive (1943)
Oliver Cromwell Jones: Mac, it's none of my business, and it certainly isn't up to me to give you advice, but if I had a weak heart ...
Chief 'Mac' McDonnell: What are you talking about?
Oliver Cromwell Jones: A man don't take nitroglycerine for dandruff.
[Several submarine crewmen are preparing to go ashore on a commando raid]
Oliver Cromwell Jones: [Looks around at all the blackened faces and hands of the other crewmen] I'm the only born commando here!