Ashton Kutcher and Mila Kunis have rejoined the bathing discussion, which they had initiated in the first place.

The 43-year-old actor took to Instagram on Wednesday to share a funny conversation he had with his wife. The couple, who sparked a debate when they said they don't wash their kids or themselves often, shared a video straight from their bathroom.

In the video, Kutcher jokingly asks the 37-year-old actress what she is doing to the kids.

"You're putting water on the children?" he asked Kunis. "Are you trying to melt them? Are you trying to injure them with water?"

Kunis couldn't help but laugh at Kutcher's comments while hiding her face with a towel. Kutcher then turned the camera toward him and said, "This is ridiculous. What's going on? We're bathing our children."

The actor turned the camera back to Kunis and she responded with laughter, "That's like the fourth time this week. Four times this week. It's too much."

"Their body oils are gonna be destroyed. What are you trying to do?" Kutcher jokingly added.

"This bathing thing is out of hand. #KutcherBathroomTalks," Kutcher wrote.

It all started when the couple appeared on Dax Shepard's "Armchair Expert" podcast in July and noted that they don't bathe their kids until they "see the dirt on them."

"I didn't have hot water growing up as a child, so I didn't shower much anyway," Kunis said. Kutcher added, "I wash my armpits and my crotch daily, and nothing else ever. I got a bar of Lever 2000 that delivers every time."

It turned out that they were not the only couple in the showbiz who thought like that. Kristen Bell and Dax Shepard also came forward to share that even they don't regularly bathe their kids. Last week, "Brokeback Mountain" star Jake Gyllenhaal also revealed that he was not a huge fan of showering regularly.

However, it became a major talking point when more celebrities joined the bathing debate.

Jason Mamoa assured his fans in a recent interview that he showered daily. Dwayne "The Rock" Johnson responded to a fan's question about his hygiene by tweeting that he took bath three times a day.

ashtonkutcher mila kunis
Ashton Kutcher and Mila Kunis attend the 2018 Breakthrough Prize at NASA Ames Research Center in Mountain View, California, Dec. 3, 2017. Jesse Grant/Getty Images