When George W. Bush arrived at the Washington National Cathedral Wednesday for his father's funeral, he seemingly slipped something to first lady Michelle Obama as he greeted the current and former presidents and their wives.

Bush and Obama went viral during Sen. John McCain's funeral earlier this year when a camera caught Bush handing something to the former first lady. Obama later said she noticed Bush was getting a cough drop from his wife and requested one as well.

Along with his wife Laura Bush, the former president immediately greeted President Trump and first lady Melania Trump before moving down the line to the Obamas. He shook former President Barack Obama's hand before handing something to Michelle Obama, who laughed.

Bush then continued down the line, greeting former President Bill Clinton, former Secretary of State Hillary Clinton, former President Jimmy Carter and former first lady Rosalynn Carter.

Because of protocol, Bush and Obama generally sit next to one another at official events. She called the former president her "partner in crime" during these functions.

GEORGE H.W. BUSH'S FUNERAL PROGRAM FOR WEDNESDAY'S SERVICE AT WASHINGTON NATIONAL CATHEDRAL

"I love him to death. He's a wonderful man. He's a funny man," Obama previously told Today.

George H.W. Bush, the 41st president, died on Nov. 30 at the age of 94. After Wednesday's funeral, where his son will give a eulogy, he will be taken back to Texas to be buried at the George Bush Presidential Library at Texas A&M University Thursday alongside Barbara Bush, his wife of 73 years who died in April, and Robin Bush, the daughter they lost to leukemia in 1953 at age 3.

Earlier this week, Obama shared a photo of the elder Bush kissing her on the cheek.

"As a public servant, father, and grandfather, President George H.W. Bush was an extraordinary example for us all," she said. "His spirit of service and decency will be missed by many, including our family. I hope his memory will be a guiding light for our country and those around the world."