If it is an illusion than it is not there... So underneath nothing is more nothing. Or maybe underneath an illusion after you unveil it in your mind is reality..The floor is what is there. Or maybe because it is your illusion it is whatever you want it to be.... So underneath the floor is more money than you will even need..... Or whatever your dream is... Good question!
Chocolate... that damn bed melted.
An intended deception.
all the bottles of booze i have drank since moving into this apartment
Your illusion feet.
If you can have illusion floors, then your illusion feet would normally be standing on them. WTF do I know?