whilst I've noticed one portable stall selling those balloons on walking street I haven't noticed it anywhere outside of Thailand - other things such as nitrogen laced drinks in clubs etc yes but not helium balloons, so am I missing simething as surely the only purpose of hellium ballon sucking was when you were a kid you did it for fun to make your voice go all high pitched and squeaky for all of about 30 seconds until the effect wore off, so is that "it" ??? or is there some other "high" going on that's not instantly apparent ( which I can't imagine if it's being sold on main street walking street !)

Hell if it's just high pitched squealing you want to hear just don't pay a ladyboy their required tip and you'll hear so much high pitched squealing it would even hurt a dogs ears !! lol