Help me write a joke!!?

I need a punch line for the following

“A king, a queen and a prince all walk into a bar. The king, slams his hand down onto the counter and bellows “IM A KING! YOU STOP WHATEVER YOURE DOING TO SERVE ME!”
The queen, lightly taps on the counter and says “I’m a queen! When you’re done serving him, you serve me!”
And the prince _________________________“

How does he pull the attention of the bartender and what is something funny, a prince would say?

Anonymous2018-09-21T01:52:53Z

...sets his sword on the bar and addresses the bartender, "Hi, I'm the Prince. I hate drinking with my parents. They are so embarrassing. Tonight I just want to drink so much that I turn into a frog."

Martin2018-09-21T01:27:49Z

Stop shouting this is a gay bar ,we await your service ,its not been my happy hour