B-Card
The butt version of a V-Card. It means you're still a butt virgin, and you're probably still wearing pants.
My B-Card is still intact. I haven't even let my brother touch my butt hole.
I got my B-Card taken by a guy who smelled like gym socks and regret.
My B-Card is like my V-Card, but I don't get to wear a crown for it.