Monkinis?
Because Buddhist men are required to be monks at least twice in their life, one sees many young monks who are only their for their required time and are just like adolescents and teens all over.
(please excuse the poor color - this was badly exposed but I wanted to keep it to remind me of Nong Khai)
This was on the Thai side of the Mekong in Nong Khai in the Province of Isan where the people actually identify themselves as Lao rather than Thai and where the local language is a dialect of Lao.
Nong Khai is in sharp contrast to the Lao side. It has modern everything, especially electricity and is supported reasonably well by the central Thai government. This is the poorest section of Thailand and it has the unfortunate reputation of sending young women to Bangkok to work in the massage parlors and bars. The locals look more Lao than Thai.
Tourists are mostly pass through on their way to Vientiane (across the bridge in the background) but there are a couple of good restaurants and a horde of low-cost places to sleep.
Baht are about 30 to the dollar so a fan room is $10, room with AC around $13. AC is low volume Japanese models and work only when you are in the room so one always comes back to a hot stuffy place to sleep.