When you go to cook up some potatoes but you forgot what potatoes are and you think they are poisonous you don't cook or eat them and after a while they grow so big that the house explodes.
Try not to be potato forgetful today or this house will be no more.
Oh no, There was a dude that was potato forgetful today and made the building explode, Silly potato forgetfulness people.
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.