Please stop?haha..people are just having fun with you.
Your oscar will be ok their divas anyway. It'll sulk for awhile but be ok as long as you give it pristine water. Your human you are superior. Now how big is the oscar? A 12-18" oscar needs bigger than a 60g...for a 12"+ oscar I'd recommend bare minimum 75 US gal. If you insist on putting a bigger oscar in a 60g. I would remove all decor and bring my substrate down as far as possible. Water changes will have to be in the 3 times a week 50-75% range to keep your parameters tip top.