That's fair,I always wondered about that.A lot of brothers pick up women from supermarkets,Wal-Mart and I wondered how they pick up on the vibes.
I don't mind being approached outdoors. It's all in HOW you do it.
You're in a supermarket. Talk about food. Bring up something about what she is looking at, at that moment.
Ex. If you see me checking out meat, tell me about a great recipe that you love making. Engage me in conversation. Let me know you know how to converse.
If she is engaging in the conversation, it's a positive thing, even if she declines your offer date a date. (You may not be her type, she may not be single, maybe just got out of a relationship, or just doesn't want to be bothered with men ATM). That doesn't mean there is something wrong with YOU.
Don't call me any pet name. If you approach me with the "Hey ma, you got a man?" I won't even look at you, let alone respond to you. If your jeans are sagging or you look like or dressed like a rapper, I may respond once and quickly exit the scene. You wouldn't be my type so no sense in wasting either of our time.
***There are women who are going to make it clear that they didn't appreciate you approaching. Don't let that discourage you. These women have their reasons, whatever it is. Move on. There are plenty of us would wished you approached instead of standing there, staring at us and looking lost.