It was fucking amazing. Lol. But I wouldn't recommend it. It's kinda like the buzz you get off Nos, if you've ever tried that.
Inhalation of butane can cause euphoria, drowsiness, narcosis, asphyxia, cardiac arrhythmia, and frostbite which can result in death from asphyxiation and ventricular fibrillation. Butane is the most commonly misused volatile substance in the UK, and was the cause of 52% of "solvent related" deaths in 2000. By spraying butane directly into the throat, the jet of fluid can cool rapidly to –20 °C by expansion, causing prolonged laryngospasm... resulting in 55% of known fatal cases...
I used to spray it directly down my throat. All my friends did, until my friend froze her throat and could have died. Most of my friends switched to doing it from bags but I still preferred straight from the can. I used to be messed up. I'm never touching that shit again.
I have huffed gasoline and air duster few times and both times I was drunk. It was really stupid thing to do, but when I'm drunk I easily get really pissed of and depressed, thats why I don't drink anymore, that shit also sucks.