So i saw this game on another forum and it goes like this: a person says something he has never done and then the next poster replies if he has done it or not.
Then he writes something he has never done, and the next person replies to that.
Example:
Person 1 says: I have never eaten cold meat
Peson 2 says: I have eaten cold meat
I have never smoked cigarettes
I'll start: I have never gone 48 hours without sleep.