If you're planning on playing UNO in the near future then you might want to read the rules again because the official UNO Twitter account is claiming that everyone is playing the game wrong!
The common rule most people agree on is that when someone plays a DRAW 2 or DRAW 4 card that you don't need to draw if you have another DRAW 2 or DRAW 4. It instead stack on the next player.
However, UNO says this rule is COMPLETELY WRONG!
Apparently you cannot stack these type of cards and that the next player has to pick up the number of cards and has their turn skipped.
Sorry to ruin your competitive edge over your family game night.