give the mitten

To reject a suitor. We had no chemistry on our date, so I had to give the mitten to him. Don't give the mitten to this guy after five minutes, OK? I really think you two are a good match. Of course I gave the mitten to someone I'm not attracted to. What's the sense in keeping her around?

idiot mittens

Mittens or gloves that are attached to one's sleeves by a length of yarn or string so as to prevent their being lost. I always hated the idiot mittens my mom made me wear when I was a kid. They made me feel like such a dope! A: "Have you seen my mittens?" B: "Dude, we need to get you some idiot mittens already!" With the way you lose things, you need those idiot mittens that little kids have!