on *:text:!8ball*:#: {
  if ($2 == $null) {
  notice $nick Usage: !8ball <Question> | halt }
  msg $chan $2- $+ : $read(8ball.txt)
}

In your bot's dir create a txt file called 8ball.txt and put the following in it: 

I'm not sure, ask again..
Yes.
No.
Without a doubt.
Are you being serious?
Shesh, Get lost.
In time young one. In time..
Happy to announce, Yes!
Out look not so good.
It is decidedly so.
I don't think you should know.
Very doubtful.
Yes, definitely.
I'm sorry to say.. No.
Most likely.
Ask again later.
Hell no!
Damn right!
Hah, you've got no chance.
patience grass hopper..