Search: porkpie hat
Why: In Breakfast of Champions, p. 115:
Dwayne was so glad to see them now - these two little men in matching overalls and work shoes, each wearing a pork-pie hat.Answer: Like these!
Source: Google Images
The More You Know: The pork pie hat originated in the mid 19th century. Originally referring to a type of woman’s hat, it gets its name from its resemblance to a pork pie, apparently. Throughout his career, Buster Keaton designed and made many of his own pork pie hats: