Can you explain about the situation that saying "sad", "plural" and so on.... It's hard to understand without the background knowledge😥
In this video they are playing a game called "scrabble" where you have to make words using different letters. So playing "sad" means that she put down her letter tiles to spell the word "sad". In the game of scrabble, it is easy to get extra points by adding an "s" at the end of most words and making them plural. So by saying she didn't make anything "plural", he is indicating that she must not have been paying attention to the game. He is also worried that she might be sad since she spelled out the word "sad".
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