British GQ - Playing Dirty: The Blowguard To the Tenga - There Have Never Been So Many Gratifying Boy Toys To Entertain. Lucky Us... by Anka Radakovich, January, 2010

Some quotes from the article:

" Invented by a dentist whose patient complained that her dentures kept falling out while she was trying to give a BJ, the Blowguard was born, and just the thought is enough to give anyone with a hard-on a hard-off."

"I put the device in my mouth—it took up half of it-- and got to work. But before I could even start, I suddenly couldn’t stop talking with the strange thing in my mouth, now pronouncing blow job “bojo” and business “bidness.” I also now couldn’t speak English, which my boyfriend kind of liked"

For more you'll have to get a hold of the magazine! ;)