Shitting a kitten 

Regional idiom. To "shit a kitten" is to overreact to someone's insult when it was clearly banter.

Ryan: Hate you Jade.
Jade: Can't believe you've just said that!
Laura: God Jade, stop shitting a kitten.

Shitting a kitten by KittenShitter2012 February 26, 2012

Shitting Out Kitten Tails

Defecating turds that look like kitten tails aka small and thin

Hey last night i was shitting out kitten tails after those mr noodles

Shitting Out Kitten Tails by KittenTails January 7, 2023

shitting kittens 

Being exceptionally excited about something. Saying, "I'm excited about this," only says so much and can be taken in so many ways, but if you say, "this has me shitting kittens," there is no contesting the level of awesomeness that must be awaited.

Scammon: You excited to see Mr. Bungle tonight?
Noah: You kidding me? I'm shitting kittens!

shitting kittens by Kikipopo December 24, 2008