Random Acronym Wednesday (RAW!) pt. IV, no kidding
“SOS” is the international distress call, originally for ships, but does not stand for “save our souls / ship.” In fact, the letters don’t stand for any words, but the Morse code (3 dots, 3 dashes, 3 dots) to transmit the signal can be tapped out quickly and without pauses.
FBI = Federal Bureau of Investigation, though the letters also make up the Bureau’s motto of “Fidelity, Bravery, Integrity.”
AM / PM = Ante Meridiem (Latin: before midday) and Post Meridiem (after midday).