On *:TEXT:*:*: msg $nick $input(Say something back,e)

Now consider what would happen if such a script were possible. mIRC would have to completely halt all operations until you Say Something Back. What happens if an $input appears when you're away from the keyboard? mIRC would have to stop dead in its tracks and wait for your return.

- Raccoon

Well. At least I won lunch.
Good philosophy, see good in bad, I like!