[Gareth]

Yeah, why did they choose her? She's hardly gotta worry about how much she spends on her weekly shopping.
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In fact, I bet she hasn't even done their family shopping in years!

...and it's hardly realistic, as I can't imagine Jack nor Kelly really being kept quiet watching a few videos or DVDs.

I reckon it'd be much funnier if they had filmed her walking through the aisles saying "f*** me, these potatoes are cheap... and f***ing hell, these Pot Noodles are on special offer", meanwhile Ozzy would be seen staggering down the wines & spirits aisle opening bottles of whiskey and sampling them.