(CNN) Kim Kardashian West and Kourtney Kardashian have been known to verbally spar on their family's hit reality show, but did things turn physical?

That's what a clip that E! released Tuesday would lead some viewers to believe.

In announcing that "Keeping Up With the Kardashians" will move to Thursday nights for Season 18, the network offered a sneak peek of some of the new season's drama.

Kardashian West and her sister are seen getting into it.

Kourtney Kardashian throws something at her sibling while viewers hear Kourtney yell, "You've nothing to say," the video shows.

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