[dighton]

... a green leprechaun outfit complete with hat, tight white knickers and a shiny plastic pot of gold.

KNICKERBOCKERS n. Loose-fitting pants gathered in at the knee. For some reason as yet unfathomed by the author, the enunciation aloud of the abbreviated form of the word, knickers, will make any Englishman laugh uncontrollably. The reaction is invariable, and indeed can be made use of by medical men as an alternative to the patellar reflex in testing the neurological system of an Englishman whose legs have been amputated above the knee. The reflex does not occur in Americans or Australians, and appears to have deep-laid ethnic origins.

— Peter Bowler, The Superior Person’s Book of Words.

[Responsibility2nd]

... a green leprechaun outfit complete with hat, tight white knickers panties and a shiny plastic pot of gold.

There. I Americanized it for you.

LOL

[Constitution Day]

I have that book and love it.

[aculeus]

For some reason as yet unfathomed by the author, the enunciation aloud of the abbreviated form of the word, knickers, will make any Englishman laugh uncontrollably.

They'd really be confused by reference to a sporty 1930s hobo as "a bum in knickers."