Former President George W. Bush appeared to slip something from his pocket to former first lady Michelle ObamaMichelle LeVaughn Robinson ObamaDemocrats debate Biden effort to expand map against Trump Michelle Obama presents Beyoncé with Humanitarian Award at BET Awards: 'You inspire all of us' Voting by mail is now a necessity during COVID-19 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: Time for boldness from Biden Democrats lead in three battleground Senate races: poll Republican Scott Taylor wins Virginia primary, to face Elaine Luria in rematch 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 TrumpSecret Service members who helped organize Pence Arizona trip test positive for COVID-19: report Trump administration planning pandemic office at the State Department: report Iran releases photo of damaged nuclear fuel production site: report MORE, first lady Melania TrumpMelania TrumpGOP senator blasts Washington officials, claims DC would not be a 'well-rounded working-class state' The Hill's 12:30 Report - Presented by Facebook - US breaks daily COVID-19 case record The Hill's Morning Report - Presented by Facebook - Dems, GOP dig in on police reform ahead of House vote 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