Jay and Dunc found out that pet rats could be trained to laugh every time it sees its owner and it doesn't f all.
You only need to tickle it every single day until it gets used to it. Apparently rats love to be tickled? Meh, who would've thought.
According to scientists:
Apparently rats like being tickled because when the tickling stops, rats don't turn away...but look to see where the hand has gone. Rats recognize the hand as their playmate and approach the hand to be tickled more.
Pretty cute suff!