the barn door is open

When the fly to your trouser is unzipped

by The Race Whisperer February 3, 2016

your barn door is open

"Dude, your barn door is open and I can see your pink underwear!"

by Janis July 10, 2004

Used casually to slip into conversation that the zip on someone's trousers is unfastened, prompting them to do it up.

Rob: 'Jake, you've got a barn door open.'
Jake: 'What's that?'
Rob: 'The zip on your trousers is undone.'
Jake: 'Oh, thanks' (Fastens zip up)

by Online Fan March 22, 2015

A phrase used to describe when someone’s pants zipper is down; because in the barn door is the hog (penis).