Ladies of the Evening American euphemism
The phrase refers to a person who earns money by having sex with people
There are some ladies of the evening standing on the street.
The phrase was recorded by Caxton in 1480 in The Court of Sapience.
This phrase emphasize that Christmas takes place once a year time, so you should grab this chance to indulge yourself and be good to others.
I've eaten a little more than usual as today is Christmas and Christmas comes but once a year, right?