Presumably inspired by the Titanic (which also had four smokestacks and sank), this is the Sinking Ship cocktail glass available from FireBox. The $19 drinking vessel has a handblown glass ship inside, so you can pretend you’re Poseidon releasing his wrath upon humanity by swirling the glass to create a whirlpool and making a mess all over the living room carpet.
I’ve heard of a ship in a bottle before, but never a ship in a glass. FireBox suggests mixing a blue curaçao based drink in the vessel and adding a few large ice cubes for Titanic realism or filling the glass with coffee liqueur to resemble an oil spill. Alternatively, fill the glass with red sangria and pretend sharks are having a feeding frenzy.
The borosilicate glass is hand-wash only and comes with a warning to add ice cubes carefully and not just toss them in willy-nilly, because the last thing you want is to break off a jagged piece of glass then accidentally swallow it thinking it’s ice. Speaking from firsthand experience, that can really ruin date night.