A West Bridgford man has been jailed for 40 months after admitting two robberies.
Former university student Paul Dos Santos appeared at Nottingham Crown Court, which was told that he went to a man’s house and demanded £200, saying it was part of a debt.
Eventually, the man’s mother agreed to drive to a cashpoint to withdraw the money, said James Baird, prosecuting.
She then dropped the cash and ran to a public house to get help.
Dos Santos of Mona Road, West Bridgford was told by Judge James Sampson: “She must have been terrified at the prospect of being stabbed by you.”
Dos Santos had never been in trouble before the incident on June 18.
David Watts, mitigating, said Dos Santos had “dropped out of university and recently returned from Brazil.
“He had been long hoping to get into the army. Clearly he has ruined any chance of that. It is impossible to give any explanation why these offences occurred,” said Mr Watts.
The father of Dos Santos had been deported and the 21-year-old wanted to contribute to his family.
Mr Watts added: “He doesn’t put this forward today as an excuse. He apologises for the commission of the offences.”