It seems like Blac Chyna still can't move on from her split with rapper Tyga after she reportedly played a prank on Kylie Jenner inside the reality star's own mansion.

According to a report from Hollywood Life, the 27-year-old former stripper and model reportedly sneaked inside the "Keeping Up with the Kardashians" star's new mansion to inspect the room Kylie Jenner dedicated for King Cairo, her two-year-old son wiith Tyga.

Blac Chyna, who allegedly got help from her ex-fiancé and Kylie Jenner's new boyfriend Tyga, sneaked inside the reality star's mansion but went too far when she dipped in the "KUWTK" star's toothbrush to the toilet water.

"She thought Kylie's house was completely deplorable. It was just tacky to her," the source told.

"She thought it cluttered and was smaller than a bathroom at an outdoor concert. When she washed her hands she saw Kylie's toothbrush and it was all bad from there."

The mother-of-one even swirled it around the toilet water and put it back on Kylie Jenner's toothbrush holder, International Business Times said in their report.

According to another source from Hollywood Life, Kylie Jenner got pissed with Tyga upon discovering that Blac Chyna sneaked inside her new home and played with her personal belonging.

"Kylie was p-----, absolutely p----- that Tyga would go behind her back and pull a b------- stunt like that," the insider said.

The source added that Kylie Jenner could not believe how the "Rack City" rapper had the guts to help his ex-fiancé "disrespect" her house.

Kylie Jenner and Blac Chyna have been on a series of social media row right after the former stripper and Tyga split last year.

There were reports that Blac Chyna still can't move on with her split from Tyga as she keeps on dissing the reality star in her social media posts. Her friends Nicki Minaj and Amber Rose also jumped in the whole controversy as they made public their criticisms against the couple.

Several weeks afte Blac Chyna and Tyga's split, the rapper reportedly began dating the 17-year-old reality star. The relationship has prompted criticisms because Kyllie Jenner is a minor.