Another big Boerum Hill prostitution bust

For the second time in as many months, cops collared a bevy of would-be Johns on the corner of Butler and Nevins streets in Boerum Hill on March 9.

In a sting operation that the 76th Precinct has nicknamed “Operation Losing Proposition,” officers netted four men who tried to solicit sex from a woman working the corner.

That woman turned out to be an undercover cop — though not in plain clothes.

In the first incident at around 2 am, a man drove up to the officer and pulled down his pants and started masturbating.

He was charged only with lewd behavior.

But over the next several hours, three men were put in bondage for offering money for sex.

The first man was arrested after offering $20 for intercourse — and then turned out to have a large back of heroin on him, cops said.

Within minutes, another man drove to the corner and offered $100 for the same sex act. He was also arrested.

And a third man was arrested for offering $20 for sex.

The busts come just over one month after another sting at the same corner nabbed four perps, all of whom had been in the same car. The stings came after a neighbor provided cops with the lead they needed, police said.

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