Autobiography of red quotes that 70s show
Red, who realized he had to gear up to become a father soon, discovered that Frank was an ass but also dumb. In a lightbulb moment, he merged the two words and the insult "dumbass" was born. Interestingly enough, Red wasn't the first character to call someone a dumbass in That '70s Show. That award went to Eric in the season 1 episode titled.