Annoyances VIII - Corned beef tins

Why not use, you know, a normal tin? The type everything else is in?

If the little key is so great, then why don't we use it on other tins?

Oh, that's right, because it never works properly. And half the time you end up cutting your hand on the tin.

Maybe corned beef tasted better scooped out from a half-open tin and covered in blood, however i'm yet to be convinced of that.