 On the February 20, 1981 episode, Andy Kaufman was the host.During a sketch about couples at dinner sneaking away to the bathroom to smoke marijuana, Kaufman, who was known for causing trouble on live television, broke character and refused to read his lines (saying "I can't play stoned").Michael Richards got up from the table, grabbed the cue cards and threw them down on the table in front of Kaufman, who responded by throwing a glass of water on Richards.