The performance involved customers shouting the famous phrase out before being joined by a topless man in a gladiator outfit
This is the moment a group of film fanatics had Starbucks staff and customers in hysterics with their flashmob-style prank "I am Spartacus".
A man queues up and orders a drink, telling the staff member he is called Spartacus so she can write it on the cup.
But in a prank directly mocking the store's habit of writing on cups, a group of jokers recreate the famous scene from Stanley Kubrick's 1960 classic Spartacus.
When the drink is finally ready, instead of getting up for it, the customer stands and stares at the poor staff member.
A second later another customer shouts out "I am Spartacus".
He is followed by another, then another, and so on until half the room have shouted the line out in succession.
Staff and other customers look shocked and a few start laughing at the outburst, as it gets louder and louder.
Eventually a topless man walks in dressed in a gladiator costume and immediately shouts "I am Spartacus", leaving the room in silence.
He calmly walks up and says: "I'm Spartacus and that's my drink, thank you very much. Can I get a straw with this?"
The busy room erupts into applause as he leaves.
The prank was organised by the Improv Everywhere group and uploaded to YouTube as part of their Movies In Real Life series.