The BBC only objected to the drug references (and, apparently, the veiled references to cross-dressing in Arnold Layne), they didn't have a problem with the f-word.

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what do you teach your children about me?
what do you teach your little children about me?
pimp, thug, bling drug lord of the undergrounded kings
how can you be so sure i won't call down the rain?
what do you teach your little children about me?
you point your gun, wait, hide and run. i see it plain