Here's how it's gonna start, one user will post a half finished sentence, and another user will complete it and post a half finished sentence of their own. BUT you can continue the same sentence if desired to.
Example: Change of specific subject
User 1 You are the most beautiful...
User 2 ...ham sandwich I've ever seen.
I'd look better as a...
User 3 ...spiked whale.
Does this dress make me look...
Alternative Example: Continue of specific subject
User 1 You are the most beautiful...
User 2 ...ham sandwich I've ever seen...
...but I'd rather have...
User 1 ...the undying souls of my enemies...
...But its also good with a side of...
And so on. I'll start:
If I could have one thing in life it would be...