You take one more shot at the bar and you're basically ready to sing your favorite song in front of a crowded room of strangers. Then you turn back for another. Just because. OK, now you're totally ready to belt it out — you're going to morph into Madonna up there! You are the Material Girl! You grab the mic and grab your crotch and say, "Come on! Vogue!" At Gaby's in Pembroke Pines on Thursday nights, you're not alone on the karaoke stage. And we're not talking about the 20 of your best friends yelling the lyrics into your ear; we're talking the band Boys Night Out, bringing Rockstar karaoke to this strip-mall staple. This live act plays instruments while you stumble drunkenly through the tunes of Metallica or Usher or Evanescence. And when you can't rap along with Biggie, Merv Thompson, Erin Hagerty, Wayne Hood, and David Bertok are there to help pick up your slack. These guys have been around for about a gazillion decades, or maybe like three, so they know what you're trying to say, and they'll sing it for ya. Ladies drink free till 1, so no doubt you'll be nice and lubed for your big moment in the spotlight. Now, sing!