Since we are into religions, a Jewish mother joke:
It's the story of a guy of wants to test his Jewish mother since he just started dating a new girlfriend.
He comes to see her with his girlfriend plus two other girls and ask her:
The guy
"Mom, I want to test you. Please guess who is my girlfriend"
The mother
"Easy, that's the one in the middle!"
The guy
"Oh mom! I knew it! You guessed it right! But how come?"
The mother
"Well son, she's the only one I hate at first sight, see it was easy!"