I've seen this forum game elsewhere and thought it would be interesting to start it here to see just how original and funny we can get.
So the game is pretty simple, I will start by stating a situation, and the next poster will respond with "What you failed to mention is..."
A simple example:
Me: I screwed up my exam.
Next Poster: What you failed to mention is you screwed up because you arrived an hour late.
I ate a boiled egg.
So every poster will answer with "what you failed to mention" to the poster above and also state a situation that applies to himself/herself.