I don't know why you're getting down voted. My friend who introduced me to ray tai also gets that. Sadly, that one crossed a squeamish line for me, but he swears by it.

It is one of the 'standard' grooming things that you can take advantage of se asia. Grooming is really common because it is so inexpensive. Why cut your own toe nails when you can have someone who does it all day long do it for $2?