so hard being the bigger person

Walking in Costco yesterday to do our New Years party shopping. I pass this vendor for lotion and she asks if I would like a sample, politely I say no thank you. I don't even walk a few steps away and she turns to the girl that was helping her and says "she's huge, that's exactly why I never want to get pregnant". So much of me wanted to lash out. Lord knows my hormones went from 0 to 1000 really quick. I stepped back, turned with a smile and said "well some women aren't meant to be mothers either, happy holidays". She was stunned. I wanted to say so much more but I turned and continued about my day. Rude people bug me so much.