Army people are robotified but then to make up for it they disobey some silly cultural norm, like they make up x rated ditties to sing as they march about. This is an attempt to give some balance. So the soldier doesn't feel like such a rule obeying robot.

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We create and discard gods constantly unaware of what we're doing. We need a god to cry to. We need one to get angry at when we're angry at no one... We can best believe in magic when we're unaware we're doing it. We do it also when enjoying music...

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http://news.yahoo.com/s/livescience/20081201/sc_livescience/cleanpeoplearelessjudgmental
Saying clean words makes a person feel clean? Eh?