One Word Posts

Is there a way of blocking posts that only contain 1 word or X characters? We are getting a lot of posts consisting only of "lol." or "Yeah." etc. We've also got a lot of younger posters, so it's a lot easier to get the software to stop them from doing X rather than telling them a million times not to do X.

it is not possible to set character limits at the moment, though i am looking for a script that might work