Saturday Night Live‘s Mikey Day understands why Heidi Gardner couldn’t get through last month’s now infamous Beavis and Butt-Head sketch: His Butt-Head face was just too much to take in all at once.

On Late Night With Seth Meyers this week, Day recalled the sketch, which co-starred Ryan Gosling as the Beavis look-alike, and how the dress rehearsal, though the two were in full costume, didn’t have quite the oomph as the on-air version. Gardner, as millions of viewers have seen, was playing a NewsNation host moderating a town hall who doesn’t realize that two men with uncanny resemblances to the cartoon duo are in the audience.

When Gardner turned around to look at Day, she lost her composure and couldn’t stop laughing.

Day told Meyers, “At dress, the wig was a little far forward so on air there was just more head, and...