All in the Family S04E17 - Archie Feels Left Out

It's Archie's 50th birthday and Edith, Gloria and Mike are planning a surprise party for him. However, Archie finds out about the party and Edith insists that he act surprised when he walks through the door. Meanwhile, Archie isn't so happy about celebrating his birthday when Archie insists that he's 49, but Mike confirms that he indeed is 50 years old, according to his birth certificate.