The man was left with an injured penis and a Viagra hangover after his four-day ordeal.

An attempted robbery at a hairdressing salon in the Russian town of Meshchovsk became a four-day sex ordeal for the would-be criminal, leaving him with an injured penis and a Viagra hangover.

The man, identified only as Viktor, tried to rob a 28-year-old hairdresser called Olga.

Olga agreed to hand over her takings, but as she was giving him the money, she used her karate skills to knock him to the ground and tie him up with a hairdryer cord.

She then locked Viktor in the storeroom and told colleagues she would call the police, reports The Register.

Instead, Olga then stripped the would-be robber and handcuffed him to a heater with a pair of fluffy pink handcuffs. She then fed him Viagra and raped him several times over the next four days.

When he was finally released, Viktor went first to hospital for treatment for his torn frenulum (the tissue that connects the foreskin under the head of the penis), and then reported Olga to the police.

When she was arrested, Olga reported him for robbery.

"What a bastard!" she said. "Yes, we had sex a couple of times. But I've bought him new jeans, gave him food, and even gave him 1,000 roubles when he left."

Viktor admitted that she had fed him well.

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