Is this an American thing only?

I was curious how they came to that conclusion and then I realized the only person I've known who for sure wore these was a drug addict who started smoking in her teens so I can't even argue with this

Specifically Cookie Monster, or just any decorated Character PJ bottoms?

I belong to a Facebook group called Pajama Party and the object is to get pictures of people out in public in pajama pants. I scored a picture of someone in these pants in Walmart and it is by far my best submission ever!! Lol