Is it normal for her to taste herself?

During forplay, i love to pleasure my woman with some serious oral over-drive. She goes absolutely crazy over this, so much that she snatches my head away from her slippery slit and tongues me down; licking my lips and chin of her own juices. Now--because i'm a nasty man--this turns me on so much!!! I mean i go from chinese math hard to diamond mine hard! So my question is to all the ladies, is this normal? Do all or most women like to taste themselves? Is there any shame to that? Because when i say something about it, my woman just blushes and says, "STOP IT! SHUT UP!!"