Let me slip into something more...comfortable

Lili Von Shtupp, from Mel Brooks's Blazing Saddles. She's a saloon performer, with a thick German accent, who is often used as an agent/spy/seductress by the evil Hedley Lamarr. She has never been known to fail a mission...until she met Bart. Men cannot resist her, even her terrible, I mean, captivating singing voice.