"Do I Give The Hot Customer I'm Serving My Number?" [Ask A Dude]

Dear Dude,
I work at a restaurant, and needless to say, my co-workers and I come across some pretty hot guys every once in a while. One of my co-workers recently gave her number to a customer and there were some pretty split opinions on her decision to do this. How do you feel about a girl giving her number out to a customer? If your server at a restaurant were to give you her number, would this be appropriate or seen as unprofessional?
-What If She Never Sees Him Again?
 
Dear “What If She Never Sees Him Again,”
Listen to me, because I am about to tell you something that may shock the foundation of the world you live in: YOUR FRIEND IS A REVOLUTIONARY. Every guy likes to be approached. It’s validating, it’s exciting, and you will definitely make that guy think about you for the rest of the evening. Your coworker’s confidence has me wanting to grab a bite to eat just in case any cute waitresses want to take me out. (Get it? Take out?)
Food jokes aren’t funny.
Here are some things to consider. Women are significantly more perceptive than men, so you can usually tell when a guy is interested in looking at you, but to stir the pot a little (somebody stop me), try and get him to laugh too. The food industry is inherently a service based business, and in my experience, the young people working at them try to butter people up (that’s a weird turn of phrase, no?) as best they can for tips (or plans afterwards with coworkers… *hint**hint*). But be cautious! A group of boys together may rag on him the entire way out of the restaurant, that’s probably not his sister sitting across from him, your manager may feel you’re not closely paying enough attention to your other tables, and pretty soon word gets out.
Don’t forget to smile!
The Dude