Hypothetical Situation #1

Let's say you accidentally find yourself visiting sunny WorstPlaceEverville (maybe it's an island...HINT) and are taking one of the many bus lines of WorstPlaceEverVille. Let's say you are a gentleman (or gentlewoman or transgentle) and give up your seat on buses/subways for old people and preggos, as a proper member of society tends to do. Now for the scenario...a woman and her boyfriend/baby daddy/husband/whatever walks on. You can't tell if she's pregnant or just has a bit of a belly. Let's further presuppose that you grew up in WorstPlaceEverville, and know that there is a very likely chance that if you're wrong and she's not pregnant, you'll have to deal with both members of the couple yelling incoherently at you for either "disrespect" or "messin' with my girl" and be uncomfortable for the rest of the ride. WHAT DO YOU DO? Discuss.