Mid-Life Crisis

 is a song sung by Heinz Doofenshmirtz in the episode "Act Your Age".

Lyrics
Doofenshmirtz:

...40s crisis

(Unknown) 40s crisis

(Unknown)... crisis

Background Information

 * This song was first mentioned by voice actor Lucky Luciano
 * This is the second song that Doofenshmirtz sings as a background voice (the first was Kinderlumper in Der Kinderlumper)