One time when I was on a business trip, I met a woman in Papua New Guinea and she came back to my room in the hotel. It was the second night we had met.
When we were making out she was riding mme cowgirl and started screaming out "Squeeze my tits By, squeeze my tits." I dutifully did what she asked and was treated to a shower like I've never seen before or since. The milk went straight out, up the wall, over me, everywhere before she collapsed on me. It was the weirdest thing that had ever happened during sex.
I asked her how old or rather how long since her kid's birth and she said 2 years and that the ex had taken the kid from her. I never found out any more as I was on a plane out that morning. I went back to PNG again a couple of months later but never found her again. I figured it was maybe something to do with her ethnicity out there. But as you say it was kind of weird, and she did seem to enjoy it! I'll never know now.