Former President George W. Bush appeared to slip something from his pocket to former first lady Michelle ObamaMichelle LeVaughn Robinson ObamaMichelle Obama spotted dining out in DC Obama goes on TikTok to urge young people to get vaccinated Obama to Black Americans: 'Keep marching, keep speaking up, keep voting' MORE at the state funeral service for his father — an apparent nod to a memorable moment the pair shared at Sen. John McCainJohn Sidney McCainDOJ: Arizona recount could violate civil rights laws Cheney fight stokes cries of GOP double standard for women Conservative Club for Growth PAC comes out against Stefanik to replace Cheney MORE's (R-Ariz.) funeral.

Bush appeared to fetch something from his left suit pocket as he walked solemnly into the Washington National Cathedral on Wednesday for the service honoring former President George H.W. Bush.

After shaking hands with President TrumpDonald TrumpVeteran accused in alleged border wall scheme faces new charges Arizona Republicans to brush off DOJ concern about election audit FEC drops investigation into Trump hush money payments MORE, first lady Melania TrumpMelania TrumpJill Biden a key figure in push to pitch White House plans Petition calls for Jill Biden to undo Trump-era changes to White House Rose Garden Fox News's Bret Baier posts vaccination selfie MORE and former President Obama, George W. Bush slipped something into Michelle Obama’s hand. The former first lady smiled.

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The moment was reminiscent of a light-hearted interaction between the two at McCain’s funeral in September, when cameras caught George Bush passing a cough drop to Michelle Obama.

“I didn’t realize at the time that anybody noticed what we were doing,” Michelle Obama later said of the exchange during an interview on NBC’s “Today” show.

“President Bush and I … we are forever seat mates because of protocol, that’s how we sit at all the official functions so he is my partner in crime at every major thing where all the formers gather,” Michelle Obama said.

Calling the 43rd president a “wonderful” and “funny man,” Michelle Obama said in October he slipped her “cough drops.”

“I will add they were old cough drops. That’s the funny thing, because they were in the little White House box, and I was like, ‘How long have you had these?’ And he said, ‘A long time, we got a lot of these!' ” Michelle Obama exclaimed.

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Live coverage: Washington honors George H.W. Bush with state funeral