Appearing on the talk show "Watch What Happens Now" on Bravo, Bush, 33, was asked if she had ever fooled around at 1600 Pennsylvania Ave.
"Maybe there was a little hanky-panky, maybe there was a kiss on the roof," Bush said, while hinting that the make-out session was with her now-husband, Henry Chase Hager, who she married in 2008.
Bush, who is a correspondent for "Today," said the current first daughters, Malia and Sasha Obama, 16 and 13 respectively, "have done an incredible job" in the White House.
The comment came after a former Republican staffer made harsh comments about Malia and Sasha, suggesting that President Barack Obama's children had looked less than enthusiastic during a White House turkey pardoning.