21 Dares.

So, I think you know how to play this game but if you don't, here is it:
Basically you have to say {actually write down} four numbers i.e - 1, 2, 3, 4 and then the next user can say another four no. or less than four numbers. But they have to be consecutive, like counting. When someone reaches 21 the next user have to dare him/ her to do something, but it has to be here. i'e - change your display picture to 'that' for 'that' long.
That was just an example, you can choose something else.

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