HHAAAAAAAAAA!!! You're right. I think it is a kind of right of passage. I will never forget the night I woke up to all kinds of strange banging noises. I went into the living room and Buster the Beagle had found an almost empty, industrial-sized jar of peanut butter and had his whole head stuck inside. It was hilarious, but he was quite freaked out.
Just recently, one of the cats got her head stuck inside a super-sized french fry box and was running around blind! Both times, I was laughing so hard I forgot to grab the camera so, kudos to you for doing the right thing and taking a picture for us first!