That's when you stand up and scratch your crotch.
We did Christmas last night with the in-laws. Step-Father-in-law has 3 kids. 2 are normal and 1 is trashy. Well, step-sister is telling how they ordered redneck life, a game a spinoff of the game of life, and whoever has more teeth at the end wins. Well, as she is staying this Step-brother's wife (who is visably missing 2 teeth) catches my eye and then whispers to her hubby.... Awkward.
Yeah, MIL and SFIL didn't get married until after DH & I met. It's just a weird dynamic & MIL gets everyone together for Christmas and Easter.