555:
1 use in Thailand is same as LOL
Another Thai use is how WG's (or jealous Farangs) refer to mainly Japanese punters: 5 inches, 5 minutes, 5000 baht, given that, at least back when, they were known to throw money around, punting being much cheaper in BKK than Japan. There was, still is, a "Japanese" soi near Patpong, Soi Thaniya, catering to Japanese punters.