I've got several:
1. YOU can make a difference by joining the SO. (But orgs continued shrinking, PR flaps would continue happening, public would continue leaving)
2. Of course you will be paid on weekly basis. (Sometimes the SO staff in my continent would go on MONTHS with no pay or only the equivalent to 3 or 8 US dollars).
3. It is a lie that you need to complete your high school/college education. The training you get here is much more valuable than whatever you get outside. (I was probably trying to do same overt I got done on me. I had to do my "wog" education as an adult when I left just to find a decent-paying job)
4. Being in the Sea Org allows you to really grow on all of your dynamics. (What dynamycs? DM's?)
5. We do this for the greatest good. (And the Co$ has produced tons broken families, broken lifes, broken minds)
6. Yes, I know that living conditions are not as great as one'd expect, but you can help to improve by joining in. (Conditions always sucked)
7. This is THE ONLY way out. There's nothing better you can do in your life. Thinking otherwise is just plain out-ethics. (Way out of what? Is being a christian, buddhist, catholic, or whatever out-ethics? Morals and values are a personal thing, regardless of beliefs or preferences)
8. You will move up the bridge. Your are entitled to 2 1/2 hours of daily study and your auditing will be taken care of. (No study time for months —too many flaps to handle, too tired to study, no auditors).
The worst part of it all is that I KNEW I was lying and still did it "for the greatest good".