Horse in a Bookcase

"Horse in a Bookcase" is the theme song for a made-up show of the same name. It was heard when Lawrence Fletcher was watching it in "What A Croc!"
==Song Lyrics==
It's a horse in a bookcase.
It's a horse in a bookcase.
Little horse in a bookcase.
It's a horse (horse neighs)
==Continuity==
*The show is referenced in "Ferb TV" and "Phineas and Ferb: Mission Marvel", both times by Gordon Gutsofanemu.
Category:Songs
Category:Season 3 Phineas and Ferb songs