I don't see how this wouldn't make sense. Unless the finger is in the mouth, but that wouldn't be licking then.
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I don't really care if this passes or not, but why would you say that it's not licking when the finger is in the mouth? Something like post #382333 with the way the saliva is on her finger would make me think she's doing more than just sucking on her finger. If someone had frosting on their finger and they stuck it in their mouth, they wouldn't simply just be sucking on their finger to remove the frosting.
It somewhat depends on what your interpretation of what "finger licking" is, because you can say it has both a common meaning and a literal meaning.
The term finger licking doesn't necessarily have to mean the tongue has to be sticking out. In common use the term would be used to describe any depiction of the fingers being brought to the mouth to be cleaned off by the tongue of an edible substance, such as post #403759. This can be achieved either by sticking the tongue out, or putting said fingers in the mouth. If the substance is particularly messy they'd be more commonly stuck in the mouth like post #222962.