Hah, cool. I never really tried to figure it out but I always imagined it had something to do with the presenter "beaming" [1] after their successful, beautiful

Hah, cool. I never really tried to figure it out but I always imagined it had something to do with the presenter "beaming" [1] after their successful, beautifully typeset presentation. [1] https://www.vocabulary.com/dictionary/beaming https://www.vocabulary.com/dictionary/beaming