I think it's funny in the thread below how some of our male colleagues react.
I had a lunch event on Wednesday with a funding partner and my contact there (who is a super nice guy) and I were talking. I mentioned that I was starving and without missing a beat, he said "Are you still nursing your son?" I don't mind sharing that I'm breastfeeding, but I thought it was so funny that a business contact would be comfortable asking that.
I mentioned making our warehouse staff blush in the thread below. My team and I had to go to our storage facility/warehouse to clean out some supplies. We were there for several hours and I needed to pump. So I had to ask the three guys who work there if they could find me a private space to pump. They were super-nice and told me to use their office and just stayed in the warehouse for the 20 minutes or so it took. Then because I was in a different place, I didn't pack up the same way I usually do, and I somehow missed my hands-free bra. I didn't realize it until the next day. Ooops.
They delivered it to my desk a few days later without any comments. LOL. I felt kind of bad.

Re: Nursing/Pumping and male colleagues
I work at a place that among other things, promotes breastfeeding. I know I've talked on here ad nauseum that due to low supply I nursed and supplemented. All the women in my organization understood - but the men? I had a male colleague shake his head and sigh when he asked and I told him I supplemented, saying, "American women never exclusively breastfeed." I was so angry.
It was great when I was pumping though. People understood it was quiet time - no phone calls, barely any emails. You could hear crickets chirp.