Jennie Garth and Tori Spelling are still feuding with their former "Beverly Hills, 90210" co-star Tiffani Thiessen.

Garth and Spelling appeared in a sketch based off of their '90s hit during the latest episode of "RuPaul's Drag Race."

In the parody, Garth's character was critiquing a contestant played by Thiessen's "90210" character Valerie when Garth refused to say Thiessen's name.

"As Ti… how do you say it?" Garth said while Spelling jumped in saying, "Just say, 'That which we don't speak of.'"

The duo laughed and Garth added, "Yes, we know her as 'That which we don't speak of.'"

Thieseen told Howard Stern in 2012 that her and Garth "had a falling out and we grew apart."

"I was the one who was hurt, let's just say that," Thiessen told Stern.

She added that Spelling's split from her first husband Charlie Shanian in 2005 added to their rift.

"It was a hard situation for everybody. We were close with Charlie [Shanian]… my best friend was Charlie's roommate. It was hard," Thiessen told Stern.