User blog comment:PhineasxIsabella/Phineas and Ferb Trivia/@comment-2217944-20100801174723

ANSWERS:

1. His mother

2. 5 that I remember: Busted, SIMP< Gitchi Gitchi Goo, Phinedroids and Ferbots, Do Nothing Day.

3. True. He says this in the extended version of Gitchi Gitchi Goo.