He doesn't say that.<quoted text>
His friends are spouting off about their lifestyles. On facebook.
I can tell someone's lifestyle by looking at pictures, or by gleaning information from innocuous posts. Friends who drink. Friends who shop for purses and shoes. Friends who post a lot of pics of their pets or their kids.
They aren't spouting off about anything. but someone like LW's mom would have enough info to start judging and making inappropriate comments. She's rude.