A "Sally-Whippet"...take a hit of salvia extract, then blow it into and out of a nitrous balloon for as long as you can...now who's gonna try it? Oh, and to think this is actually a legal high...hahaha.
it would be awfully hard to push a big hit of even 5x into a full nitrous ballon and huff it, shit hits you like a brick. you wouldnt have the strength to blow into the balloon. maybe you should just hit the nitrouse then the sally, or hit some 10x and wear a gas mask off a tank while your in your lil world. you know those whippet crackers that hold like 10 whippets and they have a button to release nitrous. i wanna hook one of those up to the shot gun of a bong. you could do your salvia idea with that. too bad it's like $25 for those nice crackers and then you gotta have a bong with a shotgun plus the whippets and the salvia. thats an expensive little ten minute trip.
Yeah, it would require impeccable timing/coordination...2 fast acting hard hitting drugs like that...I've done it with a hit of the MJ before though. And yeah I know what you're talking about, my neighbor has one of those crackers, they're the bomb. You can put a couple charges into it and make a jumbo balloon for extra good times. Well anyway, someone try this and tell me what it's like...NOW.