We've seen some pretty bizarre things taken into festivals over the years: seven identical flamingo costumes, a floral-upholstered chair (with matching pillow), a flashing dildo adorned with sequins and fairy lights to resemble a unicorn horn, a tub of ricotta.
And of course, we understand why Class A drugs, fireworks, weapons, drones, and glass are banned from the UK's popular festival line-ups.
However, one thing we can't quite comprehend is the fact the pineapple, otherwise known as the friendly ananas comosus, is now considered a forbidden fruit (quite literally) and has been banned from this year's Reading and Leeds Festivals.
According to the BBC, the tropical plant will now appear on a list of items banned from the festivals for fear of fans of Oxford band Glass Animals bringing hundreds of fruit pieces to its gig.
The Glass Animals' hit song 'Pork Soda' has the lyrics 'pineapples are in my head'. As a result, hundreds of fans dressed as the exotic fruit and held up their pineapples in the crowd at the group's Glastonbury gig in June.
The band's Joe Seaward said it would be a 'challenge' to get into the festival with the spikey fruit.
'Anyone who wasn't bringing a pineapple definitely is now,' he said.
'It's fruitist. Watermelons are fine, but not pineapples?'
To be fair, Seaward has a point.
Of all the heavy and sharp objects to be thrown about in the crowds at a festival – plastic beer bottles full of urine, shoes, people – we wouldn't put pineapples up there as the most dangerous.
It's fruitist. Watermelons are fine, but not pineapples?
We've also never had a spikey bit of greenery to the eye, and don't particularly fancy trying it out now to prove a point.
A spokesman for Reading and Leeds Festivals said: 'Organisers were a little concerned about hundreds of pineapples turning up on site so decided to ask fans not to bring them along.
He added: 'The tongue may be slightly in cheek on this one.'
The BBC has asked the organisers if they have specific safety concerns about the fruit.
We wait with bated breathe to hear the response.