What theme, what theme, what theme? When contemplating which theme to have for my son’s 8th birthday party, we thought of many different options. My son proposed Captain Underpants. After I explained to my son that mommy goes WAY too far into a theme to have a Captain Underpants party, we ultimately decided on Mario. Evan and his dad like to play Mario games so the theme seemed appropriate. Evan and Daddy helped me with all the Mario questions, and when it was said and done, we picked well!