Why do I still have this expired coupon that I didn't want and can't trade to trashbot?

[Dangerous Beans]

http://puu.sh/wb3va/3fea506858.png

Why is this a thing that needs to happen?

Edit:

Oh, great, I can't post screenshots now. Thanks, Steam.

I have a coupon for Mini-Ghost, which I'm not interested in. It's not tradable and it expired 2 days ago. What gives?

[cSg|mc-Hotsauce]

it will go away.

dont use url shorteners.