The idiom 'tips the basket' is a recently invented phrase by one clueless Aussie teen, who legitimately thought it was a saying. 'Tips the basket' is an expression of something going too far, or reaching a certain annoying/irritating end point, but it can also be used in a positive situation.
'tips the basket' examples:

I can't believe she called me a dumb bitch, that really 'tips the basket'.
Not only did the waiter apologise for forgetting our order, but he also gave me a free latte. That really 'tips the basket'
by thatcluelessaussieteen April 18, 2019
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A person, mainly a young male, who is constantly saying stupid shit.
Ronald, stop being a fucking basket all the time.”

“Andrew was being a fucking basket in class yesterday.”
by Mikepegg7809 May 31, 2019
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