1.) Hold your straw & wait for the bartender to pour the flame
2.) When he pours you get ready
3.) When the flame touches the "mixes"..that's when you start to suck
4.) The straw will melt for sure because Its flame & no point drinking once the flame is off then It will be called Lamborghini only without the "flame" Lol

So TS, basically you're drinking the right way There's another drink better than flaming lamborghini, Its the Green Fairy I think only The Library have this..the main ingredient for this drink is not available in this country though ><

CHEERS! Happy Drinking!