Being tone deaf and all, karaoke has always been a challenge. With no musical ability whatsoever, you're pretty much left with three options:
1. Make sure your song is a group song that involves lots of other girls so you're never close to the microphone. Of course, this comes with the obvious side effect that you are part of a large obnoxious group of girls on stage most likely singing "Love Shack" or "I Will Survive," and your dignity is lost somewhere amongst the red headed slut shots you've been taking all evening.*
2. Only sing once everyone else in the bar is too drunk to realize how bad you really are. If you're me, there's always one table left that cannot -- either due to court mandates or liver problems -- reach this level of inebriation.*
3. Learn a song that involves more speaking than singing.
I once saw a girl perform Eminem's "Lose Yourself" and bring the house down. Admittedly, said house was a smoky bar between a Days Inn and a Waffle House, but I still count it as an accomplishment.