Children: The ultimate obstical

I was out with another member of this forum the other day and watched while he opened a set at the mall. He was doing very good, but the women had a small child with her that started to get jealous. This just killed it for him. So, I started thinking about what could be done about a woman with a kid.
This is sort of location based, but it worked fairly well for me yesterday at wal mart. I'd open the woman by asking her if I could speak to her child. I'd tell her that my sister's boy (or girl) was about his (her) age and had a birthday coming up. I told her my sister lives in Utah and I don't really know the kid very well, but want to buy a gift. "I'd like to know what your kid would like to get for a birthday gift so I'll know what to send my sister's kid."
This worked fairly well. It made the kid feel important and that I valued his (her) opinion. The kid still got boared after a few mins. But, at least she wasn't jealous.
What do you guys think? Any other ideas about dealing with kids?
This is sort of location based, but it worked fairly well for me yesterday at wal mart. I'd open the woman by asking her if I could speak to her child. I'd tell her that my sister's boy (or girl) was about his (her) age and had a birthday coming up. I told her my sister lives in Utah and I don't really know the kid very well, but want to buy a gift. "I'd like to know what your kid would like to get for a birthday gift so I'll know what to send my sister's kid."
This worked fairly well. It made the kid feel important and that I valued his (her) opinion. The kid still got boared after a few mins. But, at least she wasn't jealous.
What do you guys think? Any other ideas about dealing with kids?