Does it every annoy you when nosey people...?

try to tell you what to do with your child? My hubby and I were at the commisary doing our grocery shopping. The baby was cranky, so while we were waiting in line to check out my husband picked her up out of the carrier and started rocking her. She's 11 weeks old and can hold her head up, but he still had his hand behind her head. He was jiggling her and rocking with about the same force as her bouncer/vibrating chair gives her...and this woman behind us said "you don't need to bounce her that much...try rocking her slowly. That's not how you rock a baby."...I was SO annoyed, but my husband laughed it off and ignored her. If she had said it to me I would have told her to mind her own business. Why do people think they can tell you what to do with your own child?? Grr...ANyway...anyone ever have something like this happen?