Here's a breakdown:
* "Prithee" is a contraction of "pray thee".
* "Pray" in this context is not a religious request, but a polite way to ask.
* "Thee" is the archaic form of "you".
So, "prithee" is essentially a formal, old-fashioned way of saying "please".
Examples:
* "Prithee, sir, could you spare a moment of your time?"
* "Prithee, tell me more about your travels."
You might encounter "prithee" in older literature, Shakespearean plays, or historical fiction. It's rarely used in modern English.