The funny footage shows a cop being busted out of the bathroom with the heavy-duty ram after getting stuck.
The huge red enforcer - dubbed the big red key - is normally used to smash down the doors of hardened criminals.
The 30-second clip opens with an officer from an unidentified force striding into the toilet with the 35lb battering ram over his shoulder.
UK Cop Humour / SWNS.com
He then checks that his colleague is not behind the door, asking:
"Are your trousers up or what - are you ready to go?"
UK Cop Humour / SWNS.com
Given the go-ahead, the officer easily breaks into the bathroom with just one swing and frees the trapped man.
UK Cop Humour / SWNS.com
He then emerges to the laughter and cheers of his assembled colleagues - and appears to look a bit sheepish.
UK Cop Humour / SWNS.com
The video was filmed earlier this month.
The owner did not want to reveal which force was involved.
He joked:
"What is the cake fine for getting yourself locked in the bathroom and having to be saved by Firearms?"
