I am the Very Model of a Modern Major Monogram

Major-General's song is a song from the operetta "The Pirates of Penzance". Major Monogram sings a part of it with altered lyrics in "One Good Turn"

Lyrics
Major Monogram: Okay, he's gone. One, a-two, a-one-two-three I am the the very model of a modern Major Monogram   I've information vegetable and animal and hologram