This piercing is done on each side of the lower lip. It gets its name from the fact that the piercing gives the impression that you have been bitten by a snake on your lower lip. Since snake fangs are separated from each other by a wide distance, there exists a gap of considerable proportions in between the puncture wounds from snake bite marks - this distance is imitated in this piercing. Ball closure rings and labrets are the number one choice for these types of piercings.
Image courtesy: blog.bodycandy.com
This is a pair of piercings which is made on one side of the lower lip, without much distance between the two holes - this mirrors a spider bite, as spider fangs are located close together owing to the small size of spiders. In order to make the spiderbite piercing look more realistic, the jewellery is positioned close together, so that it looks like a spiderbite. The jewellery used for this type of piercing should be small in size, so that it doesn’t look odd on the lip.
Image courtesy: bodyjewelryblog.com