Those boys are always up to something,
And it's bringing me to tears cause,
Just before you get home it always just magically disappears.

*Chorus*
Those boys are evil,
But before you get home they somehow always clean up the mess,
Those boys are evil,
Let me spell out for you mom,
E.V.I.L.B.O.Y.S.
They built a roller-coaster,
And a beach in the backyard,
Drove cattle through the city,
And messed up the boulevard,
They took me back in time when we went to that museum,
They built 50 feet tree house robots,
But still you didn't see them.

*Chorus*
Those boys are evil,
Those crazy shenanigans caused me all kinds of distress,
Those boys are evil,
Sing it with me,
(E.V.I.L.B.O.Y.S).

I know you think they're saints,
But mom I'm here to tell,
Those B.O.Y.S they're just E.V.I.L,
Those boys are evil,
They're makin me feel like my head is in hydrolic press,
And that don't feel to good,
Those boys are evil,
Everybody,
( E.V.I.L.B.O.Y.S),
That's what I'm talkin about,
E.V.I.L.B.O.Y.S,
That's right those boys are, EVIL LITTLE boys!

http://www.lyricsmode.com/lyrics/p/phineas_and_ferb/evil_boys.html