squash the beef
During a promotional event, two 73-year-old former Canadian Football League players got into a fistfight on stage. They had a “beef” (a grudge or feud between friends, family members, or enemies) dating back to a controversial championship football game in November 1963. After one of the senior citizens knocked the other off the stage, the crowd yelled at him to “let it go!” In essence, they were telling him to “squash the beef.”