WEST PALM BEACH, Fla. — As four former presidents and the current first lady traveled to the funeral of Barbara Bush in Texas, President Trump took in his usual Saturday round of golf and issued a morning barrage of disparaging (and misspelled) tweets.

Shortly after the televised funeral for Mrs. Bush ended, the president indicated that he had also fielded a call from Rambo.

“Sylvester Stallone called me with the story of heavyweight boxing champion Jack Johnson. His trials and tribulations were great, his life complex and controversial,” Mr. Trump wrote on Twitter. “Others have looked at this over the years, most thought it would be done, but yes, I am considering a Full Pardon!”

The missive appeared to depart from the president’s typical fare — by Saturday afternoon, Mr. Trump had attacked a New York Times reporter over an article about his mistreatment of his longtime lawyer and fixer, Michael D. Cohen. He referred to a former ally as a “drunk/drugged up loser” and once again accused the former F.B.I. director James B. Comey of breaking the law by leaking memos of his interactions with the president.