The youngest found out through Facebook that her older, adult brother has a girlfriend. When he stopped over today, did he get grilled!
"Come on, tell me the deets. Where did you meet her? What does she do? And why is this the first I'm hearing about this? I already creeped her on Facebook, so you better tell the truth."
Rule #1 - When you have 5 sisters, it's better to tell them things yourself than if they find out on Facebook.