The unnamed victim, 30, said he found the woman online and invited her to his home for what promised to be a night of kinky fun.

But after he let the small (90 kg, 1.65m) woman tie him to his bed, she searched his house and stole cash and a gold coin worth €1,800, the local Hamburger Morgenpost reports.

The man eventually freed himself from the ties and contacted Hamburg Police, who are now looking out for the thief.