Disarming the Guard

Lem: ''I got fired from my job as a bank guard.''

Clem: ''That's awful. What happened?''

Lem: ''Well a thief came in to rob a bank. I drew my gun. I told him that if he took one more step, I'd let him have it.''

Clem: ''What did thief do then?''

Lem: ''He took one more step so I let him have it. I didn't want that stupid gun anyhow!''