There have been more than a handful of Hitler/Nazi related incidents in Thailand over the years. Two that spring to mind are the children dressing up like SS soldiers in Chaing Mai and the Hitler sign on the road leading into Pattaya. Here are some more Hitler/Nazi photos taken in Thailand.
It's not just Thailand though. I've heard similar things from people living in Korea and other parts of Asia. Just seems weird as most of the people who think it's "cute" or "fashionable" have no idea who Hitler was, what he did, or what the Nazi party was all about.
Is a angry looking guy with a bad mustache really that appealing?