My Nemesis

 is a song sung by Danny Jacob from the episode "It's About Time!". During the song, Dr. Doofenshmirtz flashbacks to the first time that he met his nemesis, Perry the Platypus. This song is also played in "This Is Your Backstory" after Doofenshmirtz fails to get his scheme done.

Lyrics
Danny Jacob: My neme, neme, oooo... my neme, neme, neme

My neme, neme, oooo... my neme, neme, neme

I used to sit alone doing evil all day,

But now I think that someone's gonna get in my way, yeah,

The someone in my life that doesn't want me to exist,

My neme, neme, oooo... my neme, neme, neme

And I feel fine cause I've got a nemesis

My neme, neme, oooo... my neme, neme, neme

My neme, neme, oooo... my neme, neme, neme

Now I hate him, and he hates me,

What a wonderful animosity,

Besides his hat he wears no clothes,

Now I have some-one to oppose...

Yes I have a nemesis!

My neme, neme, oooo... my neme, neme, neme,

My neme, neme, oooo... my neme, nemesis

Dr. Doofenshmirtz: My neme, neme, oooo... my nеme, neme, neme.

Background Information

 * It has been confirmed by Swampy that both "Yes" and "Cause" can be sung in the line "... I have a nemesis."
 * The album version of this song is the same, with the exception of no dialogue by Dr. Doofenshmirtz at the end.
 * The blonde-haired singer can also be seen in the episode "Dude, We're Getting the Band Back Together" from the back in the Love Händel special and in the crowd at Love Händel's second reunion concert as well as the black-haired back-up singer.
 * This song, as well as its performers are made to resemble the 1960s folk-rock group, "The Lovin' Spoonful".
 * Agent Double 0-0 makes an appearance.