Lawyers POV : What is advocacy ?

College Student Group asked a lawyer
Sir, what does 'advocacy' mean?"
Lawyer said:
I will present an example for this! ๐Ÿ‘‡
Suppose two people come to me, one is very clean and the other is very dirty. I advise both of them to get clean and take bath.
Now you guys tell me, who among them will take a shower ?? "
One student said: "The one who is dirty will take a shower."
The lawyer said:
No, but the clean person will do it, because he has the habit of bathing, while the dirty does not know the importance of cleaning
Lawyer :: Now tell who will take a shower ?? "
The second student said: Clean person
The lawyer said:
No, but the dirty person will take a bath because he is the one who needs cleaning.
Now tell who will take a shower ?? "
Two students said: "The one who is dirty will take a shower."
The lawyer said:
"No, but both will take a bath because the clean person has a habit of bathing, while the dirty one needs a bath.
Now tell who will take a shower ?? "
Now three students speak together: "Both of them will take a shower."
The lawyer said:
"Wrong, no one will take a bath, because dirty is not used to bathing, whereas clean one does not need to bath.
Now tell who will take a shower ?? "
A student politely said:
๐Ÿ™๐Ÿป"Sir, you give a different answer every time and every answer seems to be correct. How do we know the correct answer ???"
Lawyer said:
This is just 'advocacy'! It is not important what the reality is.
The important thing is, how many possible arguments can you offer to prove your point. "