I can't catch her by copying her, I can't draw her with a...

I can't catch her by copying her, I can't draw her with a borrowed stencil. She is all the things a lover should be and quite a few a lover should not. Pin her down? She's not a butterfly. I'm not a wrestler. She's not a target. I'm not a gun. Tell you what she is? She's not Lot no. 27 and I'm not one to brag.