It will never be revealed. It would be odd if all of the Phineas and Ferb characters had their birthdays in the summer.
Birthday, birthday, OH what fun Birthday, birthday, add another one Birthday, Birthday, all come along Join us in a little birthday song. Cake and ice cream Winnie the Pooh, Cake and ice cream have some, too Cake and ice cream soda pop araing join us in a little birthday game….
They don't have a birthday they all have a different birthday.
Happy Birthday
Kevin's birthday is- November 5 1987 Joe's birthday is- August 15 1989 Nick's birthday is- September 16 1992
Harry Style has his birthday on the 29th of August while Liam Paynes has his birthday on the 12th of January.
linda
Flynn
Perry the platypus
No it is actually their inventions
dave moon
It's called I, Brobot
It isn't going to be revealed.
Disney Get Connected - 2008 Phineas and Ferbs DS 2-1 was released on: USA: 1 February 2009
Because they are step-brothers they have different grandmothers. Phineas' is named Betty-Joe Flynn his grandpa is Clyde Flynn. Ferbs' is Winifred Flecter and his grandpa is Reginald Flecter.
Lawrence Fletcher is voiced by Richard O'Brien.
Her full name is Isabella Garcia-Shapiro.
its called Today is gonna be a great day by Bowling for soup