Vanessa is shocked to find out that her father will be teaching her class
Vanessa feeling embarrassed
Vanessa interrupting during mid-intro
Vanessa pulling her dad away from the classroom to talk to him
Vanessa being upset to have her father as her new science teacher
Vanessa is shocked to see Johnny mutating
Doofenshmirtz explains that he can use the hair sample to formulate an antidote to turn Johnny back to normal
Doofenshmirtz instructing Vanessa and several kids to help Perry find Johnny
Vanessa is annoyed at Johnny acting like a drama queen
Vanessa catches the syringe
Vanessa injecting the antidote into Johnny's arm
"So, you're my teacher now. But we're not gonna do... all of this every day, right?"
"I'll try. But you know, there's 261 days 'til next summer vacation..."
"....and you know, a lot can happen. Just saying."