Who knew?

With 30 plus years of living in North America under my belt you think I would be able to describe fairly common North American wild animals. But today someone asked me what this one was and I had to look it up to find out. Is it just me? Who out there knows this guy with one quick look? Hands up. Or maybe this little guy isn't as common as I thought.

My Bad

Last night as I was biking home, someone else came whizzing around a round-about, the wrong way. He too was on a bike, and knowing he was in the wrong, said "my bad" as a means of apologizing on his way.

This really bothers me. It's just not right. I can't accept it. Every time I hear it, it just sounds wrong. Now here is my question. Does it mean that I am getting old, not up with what the kids are saying these days (as opposed to when I was say 16 when I surely was up on all the latest music, fashion and slang... oh wait a minute, maybe not)? Or have I become a grammar prude from all my years of teaching ESL?

Does this one bother anyone else but me? Is it just my bad?