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As anyone who's ever travelled to the US of A will know, bumper stickers are something of an American institution.

For the most part, they're beloved of soccer mums, the gun lobby and Fox News viewers - so not the kind of people you'd usually expect to have a sense of humour.

But every now and then you'll come across one that suggests the driver is genuinely funny. Here are a few of our favourites...

adults on board
batman
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whirled peas
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tribute
questioning belief
life after death
dont drink and drive
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highlander
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Game of Thrones
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rapturestickerfunny-bumper-sticker-8
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buzzfeed worst bumper stickers
dormthumb
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