An expression used by people who have a pet cause, and don't want anyone questioning that cause. A fast way to shut down a conversation from anyone deemed too outside to participate, no matter what their level of qualifications.
"Don't go telling me to vaccinate my kids when you don't have any. Stay in your lane."
Someone who jumps from one relationship immediately into another one.
Serial monogamists can not stand to be alone and often suffer from vast commitment and insecurity issues.
Because they jump into relationships immediately after the previous one has ended, serial monogamists typically don't take the time to reflect on their behavior or why their previous relationships failed; thus, they end up making the same relationship mistakes over and over again.
Person 1: Damn, Dustin already has a new girlfriend?! It's only been two weeks since he broke up with his fiance! I think he's a sociopath.