This CCTV footage shows two pathetic robbers trying to smash their way out of a petrol station with a fire extinguisher.
Brave shopkeeper Ahmad Miakhail locked Anees Farooq and Umair Buchari inside the BP garage in Sefton Street, Liverpool city centre .
Farooq had waved a knife at him and demanded cash while Buchari pretended a plaster cast under his sleeve was a gun.
But after they took £400, Mr Miakhail pressed a panic button – locking the exit doors – then hid in a toilet with a female colleague.
The crooks realised they were trapped and Farooq dropped the cash before scrambling around on the floor trying to pick it up.