It’s a Kardashian smackdown!

Keeping Up With the Kardashians season 18 returns Thursday, and a new tease has left fans’ jaws on the floor.

Kourtney Kardashian and Kim Kardashian get physical after Kourtney says to Kim “I will f— you up, you literal c–” and throws a boxed water at her. However, it was Kourtney’s final slap before Khloé Kardashian separated them that caused her to trend on Twitter Tuesday afternoon.

Kourtney Kardashian has been waiting to whoop Kim’s ass since the day Kim lost her diamond earring in the ocean and was crying to kourtney about it. https://t.co/p2HIbWKYPN

— c (@chuuzus) March 24, 2020

so kourtney gave kim a gluten-free ass whoopin pic.twitter.com/tysGpdp39P

— STREAM CHILOMBO 🌋 (@spookysai) March 24, 2020

Kourtney, you’re doing amazing sweetie. pic.twitter.com/SZVF2qGigd

— Steve Jr. (@DwayneJay) March 24, 2020

The expletives continue during the next scene where Kim tells her sister, “I don’t even want to see your f—ing face.” To which Kourtney retorts, “I don’t want to be near your fat a–.”

To find out what happens, tune in on Thursday at 8pm EST on E!