what would u do if you were 1 trillion years old?

Sad life......

Sit very still and dead under the ground

Decay

That would only take up the first few months.

What would you do with the other nine hundred ninety-nine billion nine hundred ninety-nine million nine hundred ninety-nine thousand nine hundred ninety-nine years?

RocknRoll 4ever yeah

I am serious. 

I think I would be better at chess.

It would be frustrating if after a trillion years you didn't get any better at chess.

Ever notice how people lose their inhibitions when they get old, maybe pass wind or discuss embarrassing ailments? They seem to get to a point where who cares?

So if that's how we get after 80 or 90 years, imagine what you'd do at a trillion?

Nah, after the first billion years you'd be bored with that

How can you live to a trillion?

Your prostate might have its say at a trillion

(lol looks like comments have been removed)

The same.  Ask "death, why hast thou forsaken me?".

And then sadly ponder why does the op even ask these questions.

And then thank goodness that this thread couldn't possibly last that long.