Fonzie sets Richie on a double date with himself and two girls.
#49 - S3E10 - November 11, 1975
Note: This is one episode that is not (yet) on Uncle Earl's.
Funny episode, a real classic. The two girls in question turn out to be Laverne and Shirley, which were spun off into into the show of the same name.
there doesn't seem to be anything here