Pick up lines!

I think it was last summer my nephew Jeffrey was at my house and somehow all of my kids and him got on the subject of pick up lines at the dinner table. If I remember right it had something to do with disney and a show they were watching. I have not laughed that hard in so long. But some of the pick up lines just didn't make since and the idea that kids at 7 years old know what one is. Unfortunately since I am back in the dating/single world again. Have been for too long. I have had the opportunity to hear some pretty unusual ones.
Now my question and dilema is how do you not start laughing or gently tell them your not interested? How I end up with as my friend puts it the weirdos. I just seem to attract them. And of course none seem to be members. I have been pickup in the produce section (yes that is what I said), mall, parking lots (which is a little scary), work (co-workers/customers) and today the mail box.
I bring this up because today while I was getting the mail I encountered this situation. Maybe I should have just said yes I am married. He seemed nice enough and didn't fall into the weirdo category. But dating and me right now, well lets just say my plate is full and not just something I desire at this point. I have no time between both jobs and my kids. My kids already complain if I try to sneak out to the movies with a friend.
I guess my question is more retorical than anything. Don't get me wrong. It is always flattering to have someone be interested in you. But I have learned over the years that men my age well tend to be one track minded especially when you are dealing with the non mormon guys. Would life be easier yeah if I were married maybe the 2 job thing would go out the window. But I like my freedom of not checking with someone else on my finances and schedule. My kids often ask the question especially Sebastian and Alex when are you going to get married we want to have a step dad. I contribute that to partly the lack of interest from their own dad. I wish it was that simple and could say for sure. I just tell them it is in Heavenly Father's hands and when that person comes along that would be the best step dad to them then it will happen.
But in all seriousness being single with kids totally gives you a different way of looking at dating. I seem to be more cautious of who I am willing to talk to. Maybe, well yes I wasn't the smartest dater when I was young. So I tend to be more careful now. So what is a nice way to say your not interested. For a long time I wore a silver band on my finger until one day a friend said you know if you ever do run into mr. right he will walk past becuase you look like your married. So I decided to take it off. Now what?

Pick up lines
Are you from wikiki cause your the only kiki I see!
I think I am in love!
Are you from Tennessee cause your the only 10 I see!

Luckily these have not come from grown men just my men in my house and my nephew. These are just a few. they came up with at dinner that night. We have been taught that family dinners are the best thing for a family. We have more fun at the table then anywhere else. Sometimes dinner's last for an hour or longer. I have to remember them with one starting high school next year that won't last long.