Interns

This is why I love Phineas & Ferb:

Dr. Doofenshmirtz: But my intelligence specifically said you would be
sunbathing, he never mentioned an intern.

Major Monogram: That's because he's not officially an employee, he's
unpaid.

Dr. Doofenshmirtz: You don't pay him?

Major Monogram: He gets college credit.

Dr. Doofenshmirtz: Are you sure you're not evil?