i think he means like those red and green bricks from roblox that flip you upside down.
they were fun, but had limited use.
Oh my gosh those were as fun as hell.
I made (or sorta made, I never finished it) a game where you started normaly, flipped upside down, and won by returning back to the start upside down, and there was an upside down door at the end.
Maybe I should finish that.
But if this is possible, it should be made.