CREATE TABLE table_73083 ("Episode title" TEXT, "Subject" TEXT, "Music by" TEXT, "Lyrics by" TEXT, "Performed by" TEXT, "First aired" TEXT)

When interjection is the subject who are the lyrics by?
SELECT "Lyrics by" FROM table_73083 WHERE "Subject" = 'interjection'
SELECT "Lyrics by" FROM "table_73083" WHERE "Subject" = 'interjection'