It's hard enough being cooped up in a house with your own kids during COVID-19 lockdowns - let alone their girlfriend or boyfriend.
Not even his stint as president of the United States prepared Obama for that parenting challenge. But it turns out one of the biggest hurdle was keeping up with how much he ate.
While not revealing a name or many details, Obama did say he the young man was a British national who they put up while he was in a temporarily visa limbo.
"He's British, wonderful young man, and he was sort of stuck because there was a whole visa thing and he had a job set up," he shared.
"So we took him in and I didn't want to like him, but he's a good kid."
He also shared a very relatable parenting truth for anyone with teenage boys/young adults in the home.
"The only thing you discover — this is not a surprise to you, Bill, because you've got a son — young men eat," he joked. "It's weird to watch them consume food. My grocery bill went up about 30 per cent."
Obama also spoke about how his relationship with the girls was changing as they grew older.
"It's a blessing because all the teenage stuff is kinda gone now and they're just back and they love you again and they want to spend time with you and they're funny."
The family passed the time with some old fashioned card games, with the 59-year-old even teaching the group how to 'trash talk'.
"I think, (as with) a lot of families, we went through that first month where we were playing games every night and doing little arts and crafts projects and then slowly they started to get a little bored with us," he shared.
" ...Then having some spades games. And teaching them how to properly trash talk and slap the cards down."
The former president also recently shared how his own relationship with his own 'largely absent' father had shaped his parenting style. saying he made a promise to himself early on that hid daughters would know he'd always put them first.
"Seeing them grow up into the intelligent, strong, and compassionate young women they've become has been the greatest joy of my life," he said.