Yes, Congress has decreed that today, June 18, is National Take the Seat With the Bag On It Day. What does that mean to you, the commuter? It means that, upon boarding the train and assessing your seating options, it’s recommended that you opt for the seat that someone is clearly preventing you from taking by putting their bag on the seat next to them.

You see, the person who’s playing fair and leaving the seat available should be rewarded by getting to retain an open seat next to them. The person who’s taking up two seats, on the other hand, should be forced to move their bag under the seat, to their lap, to the overhead rack. As any parent–or product of parents–will tell you, negative behavior should not be rewarded.

So stand tall, or at least sit tall, and demand the seat with the bag on it. Congress says so, and you don’t want to go against Congress.