Food shopping - absolutely hate having to think about what everyone will eat all the time!
Years ago, it was the annual school uniform/shoe shop. Every summer I'd have to take my 3 boys to try on school trousers etc and buy school shoes and trainers. Was stressful and really expensive!
The other thing is shopping for an outfit for a particular occasion - I feel the pressure to find something and I'm never sure it's the right thing - for other women it seems so effortless. They always seem to have just the right lbd or accessories or that perfect smart/casual outfit!