Where women blow the men asunder

The story:

I was about 6 and I was listening to the radio in the car. When the song came on I asked my mum what "asunder" meant, 'cos I'd heard the word before but never understood it. She asked where I'd heard it and I misquoted the above lyric, but she laughed and corrected me. At the time I didn't understand the slightly sick implications of what I was saying, but my brother still thinks I'm perverted!