Eephus
Footballguy
Burns and (George) Carlin recorded in 1960. They were 27 and 23 at the time.When he was a young Boston comic, i used to kid Jay Leno that he stole his "serious" voice from Jack Burns. He didn't deny it. RIP -
Their act relies on a lot of silly voices. They work clean but there's an edgy bit about children's television, heroin and Lolita at about the 9:20 mark.