Pumping in front of others...taboo?

Today, I had to pump and work and invited some of my friends (aka co-workers that I like) to join me during my break for a pumping party. They were like, "um, aren't you busy at that time?" Yes, but it's nice to talk to people, and it doesn't happen very often when the majority of my break time is MOO time. So, I invited them and one came. She came in, we had a laugh and then chatted about how to get my daughter to nap longer stretches. Nothing was really decided, it was just nice to have a social break in the middle of the day; they've been lacking. My other friend joined us at the end of my session. I was sitting behind my desk, so not fully exposed.
As I was on my home, I realized that maybe it was ok to breastfeed in front of girlfriends, but not pump. Maybe like it's ok to pee in front of girlfriends, but you'd never want them there for a big poop (baby language). I wondered if they were really wierded out by my invite. Before today, I've pumped in front of my husband and my mom, and baby girl of course. Husband is super turned off and would prefer I didn't do it around him. Too bad, I'm doing it for our daughter, so I get to do it where I please. My mom's reaction was jealousy. When she pumped for me, she had to use a manual pump and could only do one side at a time. My sister walked in on me pumping once, and the shock was evident on her face. She's one of those that you can read everything from her expression. She was glad it wasn't her, yet, and was happy to move on.
I also had to pump one time in a public locker room. It wasn't a busy time, and I tried to find a isolated corner with an outlet and a place to sit. But, locker room luck would have it that wherever I got settled, someone would come claim their stuff from the locker right next to me. And yep, this young girl tiptoed out of the shower to find me is full letdown next to her locker. Oh well, I had to get my 5 oz and wasn't going to let a little public indecency endanger my milk supply or explode. So, I'll take it that since they came to my pumping party, that they were ok with it, but in retrospect I wonder if pumping in front of others is taboo.