- Oops!Something went wrong.Please try again later.
"What are you doing?" El Moussa, 39, questions Haack, who explains, "I don't know, I'm not an engineer."
Taking the table from her, El Moussa then opens it within a second of getting it in his grasp, as he playfully looks to his ex-wife to show her how easy the feat was.
But, fortune isn't fully in El Moussa's favor, as he struggles to get the legs of the table to stand on their own.
Cutting to a scene of the renovation-savvy pair talking to the camera, Haack asks El Moussa, "How come you can't open a folding table? I'm a girl!" before El Moussa responds back, "Who said I can't open a folding table?"
Never miss a story — sign up for PEOPLE's free daily newsletter to stay up-to-date on the best of what PEOPLE has to offer, from juicy celebrity news to compelling human interest stories.
"Uh, our cameraman had to do it for you," Haack quips as viewers see a crew member giving his camera to Haack to hold while he finishes setting up the table for the show's stars.
"It took him one second," Haack tells El Moussa with a laugh, before the father of two jokes, "I was just testing you to see if you could do something."
Christina Anstead/instagram Christina Anstead and Tarek El Moussa
RELATED VIDEO: Christina Haack Selling $6 Million O.C. Home She Shared with Ex Ant Anstead Following Split
After the table debacle is solved, Haack and El Moussa get down to business, planning how to reconstruct the kitchen of them they're flipping.
The pair who split after 7 years of marriage in 2016 continue to work together and coparent their two children, Taylor, 10, and Brayden, 5. Haack also shares son Hudson, 1, with her second ex-husband Ant Anstead, from whom she split after less than two years of marriage in September 2020.
Christina Anstead/Instagram Christina Anstead with daughter Taylor and son Brayden
El Moussa is currently engaged to Selling Sunset star Heather Rae Young. He popped the question on Catalina Island in California while the couple celebrated their one-year anniversary with a boat trip. While they haven't shared too many details about their upcoming nuptials, they have revealed they'll say "I do" in 2021.