weird day at wal mart

i know the title is a little redundant but this is what happened. at the local wal mart i saw a really cute, quite large fisher price nativity set. i picked it up to add to my christmas decorations and placed it on the shelf on the bottom of the cart. after completing my shopping i went to check out and realized....the nativity set was gone! the box was probably about 20"x15"by4". not tiny by any means. i stood there perplexed, had it fallen off my cart? no, if it had I would have run over it, had i at some point in a stupor decided not to buy the set and taken it off my cart? surely i would have remembered that. the check out person could see i was confused and when i told her what had happened she said, oh someone just took it out of your cart. why????my purse was much more accessible. they could have stolen my purse and used the money to buy their own nativity set. i am still confused! my thought was, oh well, i'll just get another one the next time i'm in the store. so yesterday i tried to buy another...guess what? they're all sold out! soooo strange! mom