ORIGIN:
The expression is believed to have originated from a popular 1960’s song titled Don’t Rain On My Parade from the musical Funny Girl. The song was written by Bob Merrill and composed by Jule Styne. There are no known instances of this term appearing anywhere in print prior to the 1964 song.
Funny Girl – Don-t Rain On My Parade – Broadway Musical
Some people argue that the phrase was in use before the 1964 Barbara Streisand song, but again, there is no recorded evidence of this to prove their argument.
EXAMPLE SENTENCES:
“Not to rain on your parade, but Karen is sick and won’t be able to attend your party after all.”
“I don’t want to rain on your parade and spoil the end of the movie, but Kirk moves to Seattle and is never heard from again.”
Friend 1… “I can’t wait to go out on your boat to swim this weekend. The lake is going to be absolutely amazing.”
Friend 2… “Sorry to rain on your parade, but my dad hates the water and doesn’t let us swim. We only use the boat for fishing.”