This guy's a freakin' genius.

A British crook is facing two years in jail after his victim saw right through his disguise – a clear plastic bag he'd placed over his head before the stick-up.

Jamie Neil thought he had an easy score in the bag when he walked into a gas station near Cornwall, England, "hidden" by the transparent bag, but, not surprisingly, cops had no problem tracking him down using surveillance video.

His accomplice, Gareth Tilley, was sharp enough to hide his face with a scarf, but bungled his part of the burglary by pointing what he said was a gun at the clerk, only to have the keypad light up – since it was actually his cell phone.

The robbers were high on prescription drugs and alcohol at the time.