The Arcanine's large, warm tongue could be described as it gently laps at the girl's face. It might start from her cheek, leaving a wet trail, and then move up to her forehead in a friendly, affectionate motion. The girl could be initially startled but then break into a laugh as she feels the Arcanine's love.
To write such a scene, start with the werewolf's perspective. What is it thinking and feeling at that moment? Is it driven by a primal urge or a more tender emotion? Then, when it comes to the act of face - licking, use vivid language. For example, 'The werewolf's warm tongue flicked out, tracing a gentle path along the girl's smooth cheek.' After that, explore the girl's response. Does she pull away in surprise or lean into it? You also need to consider how this scene fits into the overall plot of the fanfic and what it will lead to in the future relationship between the two characters.
Once upon a time, there was a dark forest. In this forest, there was a strange creature that made a 'lick lick' sound as it moved through the underbrush. A hiker got lost in the forest and as night fell, he heard that 'lick lick' sound getting closer and closer. He hid behind a big tree, his heart pounding. Then, he saw a pair of glowing eyes and a long tongue that seemed to be tasting the air with every 'lick lick'. The hiker was so terrified that he couldn't move, but luckily, the creature moved on after a while.
The origin could be from people's fear of the unknown in nature. Maybe they heard strange animal sounds in the wild that they didn't understand, like a lizard's tongue flicking which could be the 'lick lick' sound, and their imagination turned it into a scary story.
There's no way to really tell if it's common specifically for someone named Jojo. However, in general, reading fanfiction is a popular activity among fans of many different franchises. The Jojo series has a large and dedicated fan base, so it's likely that there are fans named Jojo who partake in reading fanfiction, but we can't say for sure how common it is without more data.
Perhaps this Jojo is interested in exploring different interpretations and stories within the Jojo universe that fans have come up with. Fanfiction often takes the existing characters, settings, etc. from the original Jojo series and creates new and unique storylines. So, this Jojo might be a big fan of the series and wants to see what other fans have imagined.
It depends. Maybe there are some telltale signs or elements that suggest it's a JoJo reference fanfic, but without specific context, it's hard to say for sure.