I would have gotten a little less than friendly, something to the effect of "what the fuck is it to you what I buy? who the hell are you to question it? what I need is NONE of you business so why don't you go over there*points* and FUCK OFF?!* ok that might be more than I would say but that would be my thought, id be more likely to say "whats it to you?! what I need to buy is none of YOUR concern so go mind your own business and shut the fuck up!" or if I wanna get REALLY bad I might say something very very ungentlemanly(ladies, this is not me, and I apologize in advance if this offends you) "shut the fuck up and get back in the kitchen, bitch!" and then I would wish I had eyes in the back of my head to watch her reaction as I walk away. I frankly think you were a little too nice about it, I believe in respecting my elders and being respectful to women but I do have my limits, and you give me bad ill want to give you bad too, its the golden rule which I try to live by every day. you could have been buying them to give as a donation to a childrens shelter, and how would she know you weren't? my mom bought some similac to give to a womens prisons or a womans shelter or something, so a package of large baby diapers wouldn't be out of the picture, you could have also further shamed her if you said you were donating them(even if you weren't), maybe something to the effect of "for your information, you loudmouth warthog faced dipshit, if you MUST know, im buying them to DONATE to help others" and make sure others hear you in the store