What do you do when you work with a complete idiot? (or to be less harsh and more precise, a mildly autistic person?)

I vomit blood.

Fine, my fault for forgetting that he was supposed to return the keys. but it was already 6pm and i thought he had already returned the keys.

Then i remembered and I called to check. guess what. HIS PHONE WAS NOT SWITCHED ON.

how smart.

the next thing i know, i see him crossing the road. and he tells me he passed the key to mr superior.

I was like "WHAT? WHY THE HECK DID YOU PASS HIM THE KEY?!!?!?!?!?!?"

and then he said,"erm...erm... we both didn't have the keypress keys so i couldn't put the keys inside and then... and then i passed him the keys."

what an idiot.

and he had the nerve to say, "oh, you'll be alright"

freaking idiot i tell you. FREAKING IDIOT!

oh. and at the same time, i realised i unintentionally locked mr superior in his office. quite laughable but still pretty ok cos he's got his own set of keys.

and mr superior's secretary left pretty early. his door was closed. do you suppose anyone would know that he was in his office?!