The world's most annoying, most badass rat is making trouble at Harvard and the scientists are not happy about it.

Described as "a real asshole", the rat - who goes by the name #42 - is making researchers lose hair over his antics. Studying the impacts of obesity on brain function, the scientists began observing normal rats and their eating habits.

But then rat #42 starts hogging himself mad, runs into walls "like a moron", and gets super fat. But to the scientists' dismay, it goes back to being his normal, sane self at night, "totally throwing off" their data.

"He's being a real shithead", says an exasperated scientist!

Above Average

And this isn't the first time rat #42 has ruined an experiment. In another research, when scientists wanted to study the effect of cat scent on rats, #42 emerged as quite the anti-hero. So while other rats were too frightened to press a red button sprayed with cat scent, #42 not only pushed the button, but also "winked and then held his little paws out for his treat".

truomega

Scientist Dr Macho believes that #42's behaviour is intentional and specifically directed at him. As reported by Above Average, he says, "I caught him laughing at me once while I was trying to sort data he’d fucked up. I know what you’re thinking, ‘Can rats even laugh? And what would it look like?’ Trust me, when a rat laughs at you, you’ll know."