The costumed suspect is caught on surveillance video going into a 7-11 store in the San Diego area Monday.
The Gumby wanna-be first asked for a pack of cigarettes. Then, the clerk says he demanded money and claimed he had a gun.
But it isn't easy being green in a bulky costume during a robbery attempt. He started fumbling through his pockets, and nothing but coins started falling out.
Gumby gave up and walked out. Police say he left in a minivan along with the man who came in behind him.
The clerk is from the Philippines, and has no idea who Gumby is, only that he left 27 cents behind.