Fun with Registries

I have discovered that when someone is registered at Bed Bath And Beyond, you can buy them stuff that was not on their registry, at check out say that it's for the couple and then it will appear on the registry. Apparently we're getting some towels that way and John and Shannan a tea kettle.

I am very, very tempted to order/register this or maybe that for John and Shannan and then return it to BBB without un-registering it. Of course, they could retaliate...