There was a family,the mom,the father,Rick,and Mark

Mark walked up to his mother and father and asked:

"Mom, Dad,Is Rick the favorite?"

And his Mom answered:

"of course not! why would you think that?"

And Mark said:

"but you only celebrated Rick's birthday..."

And his mom said:

"it's because it's his birthday today!"

And Mark said:

"but we are twins!"

The end...