Sheesh people, no one is saying there was a Tuesday in The Addams Family. It's more that it reminds them of the fact there is a little girl named after a day of the week in it (ie. Wednesday) and it feels a bit odd to them.
Honestly, I don't mind it - I've seen weirder/dafter name suggests on here. I just wouldn't myself. To me, it suggests an arty, witty, flaky type of adult.