I just found this picture. God bless John Ritter.
It’s from my favorite episode of Three’s Company. It’s the one where Jack accompanies Janet to a formal dinner party. They have to fly there and of course, Jack is afraid of flying. Larry, being the friend that he is, gives Jack a “quankqualizer” or two to calm his nerves. Then the hilarity ensues.
Don’t watch it when it comes on Nick at Nite though. They cut out most of the dance scene, which is the highlight of the whole episode.