Idioms about town. Part 2
  
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Hit town - to arrive in town;
 
Man about town - when you next come to my town, try to find me (and we will get together);

One-horse town - a very small town; a small and backward town;

Out of town - temporarily not in one's own town;

Out on the town - celebrating at one or more places in a town;

Paint the town - to go out and celebrate; to go on a drinking bout; to get drunk;

Paint the town red - to go out and enjoy yourself in the evening, often drinking a lot of alcohol and dancing;

Talk of the town - a subject of considerable gossip;

The only game in town - the only choice, which one must accept for want of a better one;

The toast of (the town) - someone who is especially well-liked, regarded, or admired in a certain place;

Town and gown - the inhabitants of a college or university town and the students and personnel of the college.
 
Examples:

The minute he hit town, he checked into a hotel and took a long nap.

I'll go out of town next week. I'm going to be at a conference. I take care of Mary's cat when she's out of town.

I'm really tired. I was out on the town until dawn. We went out on the town to celebrate our wedding anniversary.

Jack finished his exams today so he's gone out to paint the town red.