Robbers 'called ahead to bank to get money to go'
The pair called the People's United Bank branch in Fairfield, Connecticut, threatening to create a "blood bath" if there was not a bag of money waiting for them when they arrived.
But they were intercepted by police, who were already waiting on the scene when the young men arrived.
Police arrested 27-year-old Albert Bailey and an unidentified 16-year-old boy on robbery charges on Tuesday afternoon.
Sgt James Perez said the two Bridgeport residents turned up at the bank about 10 minutes after making the call and were met by police in the bank's car park.
Sgt Perez told the Connecticut Post that, in his opinion, the suspects were "not too bright".
"You can't make this stuff up," he told the newspaper. "They literally called the bank and said to have the bag of money ready on the floor because they're coming to rob the place."
It is not clear whether Mr Bailey and the teen have lawyers.