Reading Your Son-Sense Card
The card that says "I saw him and I claimed him."
The card: the son-sense card pulls two numbers - how many claims you called the right type on the first pass, and how many strength ratings you nailed - and adds one line that reads you back. It is the thing you drop when someone says "he is my son" over a very small moment and you need a number to say whether that was the real claim or the leaning one.
The tiers: The Eye For The Flat is the rare read - you tell the deadpan real Son from the joke leaning one before the room does, and you rate the strength right. Mostly On It means you get the type and mostly the strength, and miss the one that is just under the line. Waving The Meme is the honest one - you are calling everything a joke Son, which is the move of someone who has seen the meme so much they have lost the real version.
How it lands: the card works because the skill is reading the flatness, not the words. Two people can watch the same "he is my son" and disagree on whether it was the strong deadpan one or the leaning one - the card just turns that disagreement into a number. Send it and the room gets to argue about the strength, which is the whole point.