People can’t stop cracking up over the former president’s bizarre, bumbling speech.

Speaking outside Allentown, Pennsylvania, on Sunday, Donald Trump left everyone confused when he attempted to explain the Battle of Gettysburg, praised (and invented a quote from) Confederate General Robert E. Lee, and generally had no idea what he was talking about.

When his off-the-cuff remarks hit late-night television on Monday, the hosts couldn’t hide their laughter.

“You have to hand it to this guy: On the weekend before his unprecedented criminal trial begins, he somehow manages to overshadow it with this broken-brained interpretation of what happened at Gettysburg during the Civil War,” Jimmy Kimmel quipped.