Former President George W. Bush appeared to slip something from his pocket to former first lady Michelle ObamaMichelle LeVaughn Robinson ObamaObama: 'Hopeless' to try to sell as many books as Michelle Obama sold record-breaking 1.7 million copies of memoir in first week Media and Hollywood should stop their marching-to-Georgia talk MORE at the state funeral service for his father — an apparent nod to a memorable moment the pair shared at Sen. John McCainJohn Sidney McCainJuan Williams: Obama's dire warnings about right-wing media Democrats' squabbling vindicates Biden non-campaign McSally, staff asked to break up maskless photo op inside Capitol 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 John TrumpVenezuela judge orders prison time for 6 American oil executives Trump says he'll leave White House if Biden declared winner of Electoral College The Memo: Biden faces tough road on pledge to heal nation MORE, first lady Melania TrumpMelania TrumpUSAID administrator tests positive for COVID-19 The Hill's Morning Report - Presented by the UAE Embassy in Washington, DC - COVID-19 fears surround Thanksgiving holiday The Hill's 12:30 Report: Trump holds his last turkey pardon ceremony 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