The Yorkshire Museum in York, England (no surprises there) have challenged their fellow museum curators to a best bum competition on Twitter!
And we are loving these beautiful bums of history, art and the natural world.
The National Trust in the East know all about the importance of looking after one’s derrière.
The Grant Museum of Zoology has returned serve with this fuzzy butt.
Meanwhile, here’s someone in a vulnerable position.
The thing is, once you start thinking about it, bums are everywhere!
We definitely couldn’t say nay to this bum.
Now if you'll excuse me, I need glass of cold water.