"It happened, but I never saw her again." Since that day Jon - who claims to have had Toothing success five times - has set up a website dedicated to the practice but he admits it takes a degree of perseverance.
" as an initial greeting, letting the person with the enabled Bluetooth device know you are looking for sex.
"I didn't understand what had happened, but that evening I did some research and worked out how to send my own." The pair started to exchange messages on a train station platform; messages which got gradually more flirty.
"Eventually she asked me if I fancied a quickie in the toilets at the station we were travelling to.
People signed up to the forums looking for good locations in their area to tooth, and to share their toothing stories with other members.
There have later been real Bluetooth dating devices to hit the market.