No, you cannot put a wild card on a Draw 4 card in Uno.
No, you cannot put a wild card on a Draw 2 in the game of Uno.
No, you cannot put a Draw 4 card on top of a Draw 2 card in Uno.
No, you cannot put a Draw 2 card on top of a Draw 4 card in Uno.
No, you cannot put a Draw 4 card on top of a Draw 2 card in Uno.
In Uno, you cannot put a Wild Card on top of another Wild Card.
No, you cannot put a Skip card on top of a Draw 2 card in Uno.
No, you cannot put a Skip card on top of a Draw 4 card in Uno.
No, you cannot put a reverse on a Draw 2 card in Uno.
no way are you crazy
In Uno, you cannot stack a Wild card on top of another Wild card. When you play a Wild card, you simply declare the color to continue the game, and the next player must follow that color or play another Wild or matching card. Stacking Wild cards is not part of the standard rules.
No, its against the rules.
You put down one card each turn, unless told to draw a card or are skipped.