Why do fads get really stupid?

[Lilac]

I really can't understand how people have their tongues pierced.... surely it must feel like they have the need to swallow all the time. Rather like having a piece of food stuck in the teeth - feels SO uncomfortable and annoying!

My SIL worked for a dentist said they had patients come in who had chipped/worn the enamel off their teeth from tongue studs. No thanks, I'll pass!