Ask for number.

"You know you probably get this a lot but mind if I get another beer and, your number?" You ask boldly hoping for the best.

She seemed a little taken back but soon she gives you another beer and a napkin with a number on it.

"Here you go, best line to call me." She says walking away.

You look at the number and realized you already knew her number...

Cause she gave you the bars number.