What probably actually happened:
A group of supposedly grown male heterosexual police officers decide to all drink milkshakes together. One cop thought he tasted something funny. Another cop then thinks, wait maybe I taste something funny too. Another cop had a milkshake despite being lactose intolerant, or the shake didn't sit well because it's disgusting fast food and he gets some tummy rumbling. The power of suggestion, paranoia, and stupidity made them all think they had been poisoned and they truly made themselves get a psychosomatic sick feeling.
A full investigation is done interviewing employees, combing through surveillance footage, and testing the drinks themselves finding nothing and the cops feel better after digestion and peace of mind from nothing being found.
Time and money is wasted, the follow up articles says nothing happened and no cares and everyone forgets.
And the PBA doesn't miss an opportunity to proclaim OFFICERS HAVE THE MOST DANGEROUS JOB IN THE WORLD AND CAN'T LET THEIR GUARD DOWN FOR A SECOND BECAUSE THERE IS POISON IN THE MILKSHAKES.
We also get quality investigative journalism like this:
View attachment 1381127
We have milkshake, cuff it boys.
tldr: NY cops are dumb.