It wouldn't be the first time Kris Jenner has been subject to a prank by her family - and no doubt it won't be the last.
But as last night's episode of Keeping Up With The Kardashians made crystal clear, the mother and manager is not one to be messed with.
The 55-year-old hit the roof after she got wind of Scott Disick's 'plans' to take over the management of Kendall and Kylie Jenner - the upcoming teenagers members of brand Kardashian.
As she later discovered, it was all a big ruse - but that didn't stop her blowing a gasket in the meantime.
Scott - the boyfriend of Kourtney - was chatting with Kendall, 15, and Kylie, 13 when Kendall mentioned that her mother had left her stuck at a photoshoot by herself for hours.
They then came up with a plan to make Kris pay more attention to the teenage sister, whose father is Bruce Jenner.
Over dinner later in the episode, the two sisters break the news to their mother, prompting her to storm out and call Scott.
Following a heated telephone exchange, she then marches over to his house the next day and tells him in no uncertain terms that Kendall and Kylie are hers to manage on not his.
'Scott should know well enough by now not to mess with my family and definitely not to mess with my business,' Kris raged to the cameras during the E! reality show airing.
When Scott tells her he is joking, Kris is still worked up and the pair end up exchanging a series of barbed remarks.
But after a chat with Kourtney, Scott eventually gives in and apologies to his would-be mother in law.
Elsewhere in the episode, Kim overcame her fear of dancing after admitting, she just doesn't like it.
An initial dance class failed to do the trick - and she walked out half way through.
But at the end of the show she is seen getting up in the middle of a restaurant and joining in with a group of belly dancers.