Think about it. Is anyone going to stop having oral sex because some legislator says so? No. They'll go on just like they have been. If it ever occurs to them that what they're doing is not only illegal but a felony, it will only be to smirk and laugh at the nitwits who made the law.
It makes a joke of the law and the people who make laws.
When people later encounter laws like running red lights or littering, any respect for those laws won't be based on the respect for the judgment or the authority of the people who passed the laws, since their wisdom of how they exercise their authority is clearly in question.
Rather, they'll make up their own mind about laws, observing them only if they personally think they're a good idea. When they do decide to break one, the feeling won't be a new one.
As they run into enough of these absurd laws, a pattern emerges: Those in government have lost their mind, and they are only to be feared, not respected. Indeed, there are so many laws on the books that the average person breaks several of them every day, most times not even knowing it. People start to get used to being criminals, and the word criminal begins to lose its meaning.
The only practical effect this law has is to make criminals out of otherwise law-abiding citizens and to teach people to embrace anarchy. That's no way to run a government.