Yes he did. It was cold oil. I was cleaning the deep fryers and poured them into a big tupperware square like 6 qt or so bowl that was on the ground. Walked back to the garage to put the fryer back in the garage, and him on the cage, flapped down, laded on the side of the bowl, wobbled face first into the oil, flapped his wings, walked through it. Me seeing it, cursed him, came after him with a towel because he is soaked with cooking oil dripping all over the place, well THAT was play time for him, so he literally ran across the kitchen and into the living room dripping oil, and tried to climb up the couch at which point I threw a pillow at him, knocked him then got the towel around him, who is now screaming. Threw him into the shower and was like, ok so now how the hell do I fix this? Eventually called his Vet and told her what he did and she laughed and said just get some dawn dish soap, warm water in the shower and just like they do with birds in oil slicks, sponge bathe him until clean, which may take a few tries, days to get all of the oil off him. He was fighting at first, trying to climb up my leg, then eventually gave in and let me bathe him trying to wash the crap off w/o trying to bite or put up too much of a fuss during it. Im sure me yelling at him the whole time in my 'angry at you voice' he got the idea he did bad.
WHAT possessed him to want to go see what was in the oil bucket, I have NO idea, generally when he is interested in what I am cooking he'll warble, stand upside down hanging on his cage and flap his wings making a big fuss for attention until he gets a piece of whatever it was I just tasted. He makes like a wiggy wiggy wiggy sound, and can get VERY annoying when he don't shut up

He'll squawk too. In this case he was just standing on top like he always does. Maybe something scared him and he spontaneously flew off and that is where he landed, I honestly don't know. Usually when he's being mischievous he'll be perked up like he's proud of what he just done, but not that time, so don't even think it was intentional. I was so worried he might have inhaled some of it but fortunately all worked out in the end.
Aaron