A Canadian man is claiming he discovered a mouse at the bottom of his McDonald‘s coffee cup after consuming the beverage.

OK. Yuck. But is his claim legit or a scam?

Ron Morais says he picked up the coffee from McDonald’s on his way into work on Monday and found a dead mouse inside.

“I always take the lid off to get my last sip of coffee. And when I took the lid off there was a little bit of a surprise in my coffee cup. It was a dead mouse,” Morais said.

“Oh my God there’s a mouse in my coffee is what he says. I turn around and look at him, I had somebody on the phone,” said Jennifer LaHaye, a coworker.

This man found a dead mouse in his coffee… after he finished drinking it http://t.co/472ohVIuhk pic.twitter.com/4UpvIXEXSC

— The Independent (@Independent) October 17, 2014

Morais’ co-workers couldn’t believe it.

“Unless I had been there and seen Ron drink all that coffee down to the last drop, I would have been, like, ‘you’re lying.’ I would have just said, ‘you’re lying through your teeth, it’s just not possible.’ I left, I left work. I came out here, and I was almost puking,” said co-worker Brad Patterson.

“The first few times I looked, I had to look, and I’m like, no it’s real, he’s not joking, is he ok? And then after that, I got a little green to the gills,” LaHave said.

Mouse in a coffee cup? Man's claim of rodent in drink investigated by McDonald's http://t.co/TaNknaN1cG pic.twitter.com/ZXL6hRZOBU

— CBC News (@CBCNews) October 15, 2014

Morais also claims there were mouse droppings along with the rodent.

He allegedly called the McDonald‘s customer service line, but they have yet to connect with him.

Morais contends he’s not planning on suing the company. He says he just wants some answers and the assurance that this won’t happen to someone else.

“I’d like to know how the mouse got in the cup of coffee. That’s basically what I’m looking for,” Morais said.

.@McDonald’s investigating claim of dead mouse in coffee http://t.co/2hEz8yyMey pic.twitter.com/XyCO4siBnx

— TorontoStar (@TorontoStar) October 15, 2014

However, a New Brunswick Department of Health Food Inspector examined the restaurant and cleared it, finding no evidence of violations or pests.

McDonald‘s says it hired an independent pest control company to investigate and it didn’t find any pest issues either. McDonald’s says it wants to analyze the mouse, and it cautions against anyone jumping to conclusions.

Morais said he took the finding in stride.

“I mean, hey, you know. I’m here,” Morais said. “And I’m in better shape than the mouse!”