Being Brave!

I'm taking my 5 y.o. son to the supermarket with my parents. Every single time I take him to the shops, I swear I'll never do it again! I want this, I want that - gimme, gimme, gimme. Mind you, he doesn't say 'gimme' - that is banned in our household, the the I want this, I want that is what I'll be hearing. I'll let the grandparents cave in to him as I am there to strictly shop.