Karl Stefanovic has burst out in laughter after weather presenter Steve Jacobs made a joke about Mitchell Pearce. Credit: Today Show

ANOTHER day, another laughing fit from Karl Stefanovic.

This morning it was a joke from weather man Steve Jacobs that set Karl off on Channel Nine’s Today show.

Jacobs was doing the weather from a Petbarn store to promote their upcoming Valentine’s Day promotion when he snuck in a sneaky gag about disgraced NRL player Mitchell Pearce.

“This Valentine’s Day is going to be a big day when you can come along to Petbarns right around Australia and have a little bit of a dating service, not only to find a pet that is right for you, but the pet who can find the owner that is right for them,” said Jacobs.

“It’s Mitchell Pearce’s ultimate dream. Valentine’s Day in Petbarn.”

Stefanovic reacted with hysterical laughter and even Today co-host Lisa Wilkinson looked like she was on the verge of getting a case of the giggles.

“Too much, too early? asked Jacobs in response to the laughter.

“Possibly too soon,” said Wilkinson, “but judging by the amount of laughter coming from my right, maybe not”.

Roosters player Mitchell Pearce made headlines for all the wrong reasons after a video leaked of his drunken Australia Day antics.

In the video, Pearce appears to force an unwanted kiss on a female before simulating a sex act with a dog.

“I’ll f*** that dog,” he can be heard saying in the video, “I don’t give a f***, I don’t have a sexuality”.