be a(n old) stick in the mud

be a(n old) stick in the mud

To be boring or tedious, often due to unpopular or outdated beliefs. I'm not being an old stick in the mud just because I won't drink alcohol. We're only 16—it's illegal! Oh, come on, let the kids stay up a little longer to watch the meteor shower. Don't be such a stick in the mud! Just because I don't like roller coasters doesn't mean I'm an old stick in the mud—I like lots of other fun things!

See also: mud, stick

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