Two tall shots of Kentucky Bourbon, on fire.

"Twin Towers". I've heard this is what they serve you if you ask for an Irish Car Bomb in Ireland.

Two Manhattans? Except you're the one falling over this time

You’re all wrong - it would have to be a mocktail cause Shakira law is here and they’re taking our liberties away

Reposting my comment from the same thread on AskLemmygrad:

I heard a story once from someone who claimed to have boneheadedly requested an Irish Car Bomb at an Irish pub. He was apparently told, "We don't serve those here--but we do have the 9/11," and received instead two shots of 151, both on fire.

Blowback: you start a fight in a bar, wreck the place and then the bartender hits you in the face with a broken wine bottle. served with a slice of lemon.

Ground Zero: two stacks of sugar cubes dropped into absinthe with activated charcoal. Lighting the sugar on fire before the drop is an optional flair.

Alternate name during months other than September is Toxic Dust.

Shot of everclear dropped into a pint of Steel Reserve

Smokey Manhattan?

Taking down two beer towers

I don't know if the densities would work, but: a pair of Long Island iced teas with a shot of 151 poured on top which is set on fire before drinking

"falling tower": tall hollow ice cube with kahlua inside, inside tall glass of vodka with crushed ice (or rum and cream liqueur)