In the Air Force Survival Guide, on page 43, it says, ".... if you are a female pilot or crew member who survives a crash in enemy territory, and are captured, remember that your odds of survival are greatly increased if you offer to make them sammiches. See Appendix D for a translation of the phrase "I will make you a sammich" into all current foreign languages...."
Or should that be. “I will be your sammich.”
If you’re going to be anyway, you might as well volunteer.