Happy Days S06 E18 Ralph Versus Potsie

"Those were the days of the 1950's...filled with innocence and the promise of even better days to come."

Richie temporarily takes over a local newspaper's advice column but only tells Fonzie about it. Potsie and Ralph, in an attempt to solve their continuous bickering problem, write in to Richie's column. Richie, via the column, suggests they literally draw a line down the center of the room and for Ralph to stay on one side and Potsie on the other.