Top definition
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 27, 2015
Happy St. Patties Day!