In the original native culture of Thailand, when males reached the age of 18, they had to participate in the following community ceremony:
They lay themselves stark naked in a large circle, feet facing inward. A beautiful young naked girl kneels over the ankles of each of the men. She places a blob of honey and various crushed sweet fruits around his navel to attract flies and insects. (This keeps them off his face during the ceremony.)
A specially chosen nubile and very beautiful naked girl then does a sexy and sensuous dance in the centre of the circle.
As soon as all the men become fully aroused, the kneeling girls then reach over the knees, pull the erect penises downwards as much as they can and then, on a given signal from the central dancer, release them.
The men's penises would then spring back up and go "WHAP!" against their bellies.
This exercise was a measurement of the strength of their masculinity .... the man who killed the most flies was elected to the court of the King.
And that, folks, is why the current capital of Thailand came to be named Bangkok!
I tried to check this out on Snopes and they said I was a pervert!