There was definitely a time in the early 90's where the thought of getting an inner lip tattoo seemed like a cool idea. Its hidden, rebellious, it seems like a pretty fun party trick and it seems like the perfect place for any 4 letter word. Apparently this tattoo trend hasn't died out and there are new lip tattoos out there to behold, in that awkward moment when you are forced to look at the eroding gums of someone you just met, to check out their 'ink'.