While appearing on an episode of Sirius XM's "The Jess Cagle Show," Iglesias, 46, shared that the couple's kids have seen the steamy music video for his 2001 song "Escape" and revealed how they react when they watch it.
For those who need a refresher, the video featured Iglesias and Kournikova getting busy in a public restroom as well as a car in a parking garage. We also included it for you at the bottom of this post!
"I think my kids have already seen -- well, I think, no, I know, my kids have already seen that video," Iglesias told Cagle. "And they're putting two and two together. Like, 'Oh, really?'"
"Whenever they hear one of my songs, they can actually recognize my voice, which is pretty cool," he continued.
"But when they watch that video, I think it does throw them off a little bit," Iglesias added. "'What is mom doing there, you know, with dad, you know? When was this?' It's actually, it's incredible to watch the expression on their faces. It's pretty cool."
The Grammy winner and the former tennis pro, 40, share 3-year-old twins Nicholas and Lucy and 20-month-old Mary.
Speaking with The Sun back in 2018, Iglesias praised Kournikova, whom he described as a "great mother."
"It's incredible to watch a mom do what she does when a mother's instinct kicks in," he said.
Also during the interview, the "Hero" singer admitted that the thought of taking a step back from his music career had "cross[ed] [his] mind."
"There are days when I'd be lying if I said that stopping didn't cross my mind ... that probably could come a reality in the near future," Iglesias said at the time. "Maybe I don't see myself [doing] anything other than a few albums and that's it. Then, never doing anything again other than being a dad."
The "Bailando" singer dropped "Final Vol. 1" earlier this month, with the second volume coming out at an unknown time in the future. While he recently revealed the eleventh album will be his last -- hence the title -- Iglesias stressed he's "not retiring" from music.
"It's important for me to say that I'm not retiring, it's just my final album," Iglesias clarified during an interview with Entertainment Tonight. "That doesn't mean I'm gonna stop touring, that doesn't mean I'm gonna go somewhere and crawl into a cave and disappear."