Think about all these things before you decide to do this. It's like spending too much on a credit card and owing the money back.
If your on Weight Watchers you are given plenty of extra points (49) for extra foods and special Dinners and outings.
Don't feel guilty just USE those. If you need to use all 49 just use them. You won't be cheating! Now I never look at the scale the day after I've used a lot of my weekly allowance. You can almost always bet on being up some due to water weight gain. I do myself a favor and don't look at the scale for at least one day. After a day I am usually all the way back down and sometimes "minus" some.
I had to get out of the habit of doing this. It's just not worth it and leaves your weight bouncing around but not ever going down. If your happy with that then that's fine. If not, stick to your points and your weekly allowance and you will continue to lose weight. If I can do it, you can do it!!!