To pooh-pooh is defined as a way to indicate that something cannot happen, or to make a joke about something.(idiom)
When someone makes suggestions about where you should eat dinner and you find something wrong with every single suggestion, this is an example of when you pooh-pooh all the suggestions.
See pooh-pooh in Webster's New World College Dictionary
Origin: redupl. of pooh
See pooh-pooh in American Heritage Dictionary 4
transitive verb pooh-poohed, pooh-pooh·ing, pooh-poohs
Origin: Reduplication of pooh.
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