Sometimes, sisters ask you to do things that you don't want to do. And, because you love them, you do it anyway. Things on this list include: changing their kids' diapers, etc.
Other times, they ask you to do things that are easy to agree to, like attend an All Australian, All Male revue entitled Thunder From Down Under. Several months ago, my sister emailed me and said that she wanted to go for her birthday, she had already bought the tickets and it was ON!! How can you say no to an offer like that?
Years ago, before I got married, we all piled into a limo and went to a club in Philly called The Cave and it was a hysterical, laugh-riot of biblical proportions. I expect TFDU to be the same. I can think of no better way to celebrate the fact that my sister is and will forever be 4 years older, than to watch some half-naked guys gyrate for our amusement. And, eat some sinful Italian food and decadent dessert afterwards. Sundays were made for this!