The math behind road lanes. When a lane exits from the main road, the number of remaining lanes must decrease by one. When a track is added via a ramp, the total increases by one again.
Biffa: "Oh this junction is chock-a-block! What it needs is some lane mathmatics!"
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.