[Xterminator27]

Anyway, here is the way to play the game...

The first person makes a (supposedly) undeniable statement. The next poster has to somehow (supposedly) prove the statement to be wrong, and make a statement of their own.

EXAMPLE:

Poster 1: The sky is blue

Poster 2: Maybe by your perception, but everyone's perception of colors is different, meaning your red could be my blue and vice versa.

I will start with this:

A dog is a man's best friend.