Chris and I's system is impeccable - we call each other to prevent us from calling people we shouldn't.

"My cheeks hurt from laughing so much," he said.
"I wish I could remember what we were even talking about."

We talked about this dude I went on a few dates with. Chris was cackling.
"Lemme get this straight: you were hanging out with a thirty-year old who works in the milk aisle at Whole Foods and is a metalhead???!?!?!!?!"