I don't know what culture you're in, but in the USA fellatio isn't a crime. Although it's been said to be illegal in some (usually 18) states, such laws are constitutionally unenforceable. See LAWRENCE et al. v. TEXAS, (2003) No. 02-102. The Supreme Court Lawrence ruling struck down anti-sodomy laws around the United States, which included laws prohibiting oral sex.
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I'm not talking about that between consenting adults. My response is in reference to this post;
There's a tribe in Papua New Guinea where the boy takes it right from the tap, if you know what I mean. It's actually required and expected. No shame in it.