User blog comment:CandaceFan/Phineas and Ferb Trivia/@comment-3473686-20110605215839/@comment-1659929-20110605221734

1. 3 years (almost 4)

2. Get that bigfoot outta my face

3. Most likely because the name "Flynn" is Irish.

4.Candace's age, 15

5.Uncle Sabu