Ted's upcoming date with his doctor leads the gang to give him their own examples of why dating someone you already see regularly is a bad idea.

泰德重逢大学前女友——一个每次都会迅速出轨甩掉他的婊子，马修和莉莉看到如此熟悉的恋情走向再也坐不住了。然后马修还讲了个自己忘记带裤子去上班的故事。