In 2010 I shot a cow elk during archery season. I tagged it, then packed it out like normal.
I normally cut up my own meat, but due to having a moose tag that year and the warmer weather we had, I took the elk to a processor. A couple weeks later I got the elk back, with the tag attached to a package of steaks. Looking at it, I realized it was my 2009 elk tag, which went unpunched the year before.
So, not only did the wrong tag get past me, but the butcher shop too.
Pretty funny now that I think about it.
