"Much icum" is the first line of the song, which begins with "happy birthday whoa" and ends with "congratulations" . The song's title refers to the fact that the song is dedicated to the birthday of one's lover. In this case, it's the lover's birthday, and the song begins with the words "much icum." In other words, the song refers to a person's physical appearance, not to their emotional state. The first line begins with a question: "which do you prefer -- fingers or tongue?" . "Happy birthday" is a response to the first question, which is "whoa" , meaning "I love you," or "I'm in love with you." The song then turns to the question of which tongue to choose: "fingers or tongue." The first answer is "finger," and the second is "tongue." "Fingers," the song says, "are the ones that touch you." .