Collar Bones: Lusting after a clavicle tattoo? Be prepared to brace yourself. Though your collarbones can perfectly frame a cute tat, putting a needle to them can hurt quite a bit. This is a result of the bones being prominent and covered by relatively thin skin.
Ribs: There's just something about rib tattoos that's incredibly flattering. While this is an extremely popular first tattoo spot, it's also not for the faint of heart. Your ribs are comprised of mainly skin on bone, which can lead to amplified discomfort. Be sure to take shallow breaths when getting this kind of tattoo done, since too much movement of your ribcage can interfere with the artist's work. Healing is fairly mild, and wear is minimal, since the area isn't often interfered with.
Sternum: If your motto is "no pain, no gain," perhaps a sternum (aka the space in and under the centre of your boobs) tattoo is for you. Designs here can range from small and minimal to large and intricate — any of which are gorgeous complements to a bikini or low-cut top. However, because the area is extremely sensitive and completely made of bone, it tips the pain scale significantly.
Lower Abdomen: Stomach tattoos are a cool option if you're looking for something you can simultaneously hide and tease. They're also a true test of your pain threshold. Although your lower abdomen is flesh-covered versus bony, the skin is so delicate and tender you will likely feel a heightened burning sensation.