When I was ten my Mom told me to take my brother to a movie so she could set up for his surprise birthday party.
That's when I realized that he was her favorite twin.
A twin complains to his mother, “ You said you didn’t have a favourite between me and Brian.”
We don’t darling,” replies his mother. “What would make you say such a thing?”
“Then why am I blowing up balloons for his surprise birthday party.”