The beads are supposed to give a sensation when screwing either a girl or guy, similar to ribbed condoms, etc.

The silicone implants, well it's just like anything else in Thailand. The boys are convinced that some of their dicks are too small and that they will be able to make a fortune if they had much larger dicks. The doctors or whoever convince them that they are the cat's meow at making it look real and genuine only to fuck the kid up for life!