I have only gotten one tattoo and its on my inner arm, which is supposed to be one of the more sensitive areas of the body. Getting a tattoo is more like getting scratched by a cat. When you get a tattoo the needle goes just beneath the skin or just scratches the surface. Most tattoos actually bleed and over the next few days will ooze plasma from the body as it heals. Just like a large scratch on the body, you will get a scab, its almost the same with a tattoo.
Depending on where you get the tattoo will depend on how much pain there is. Most of my friends have tattoos and while some are more tolerant to pain others are less tolerant. One of my close girl friends got a tattoo on the side of her chest, while I wasn’t there, her boyfriend said she cried. Any area with tender skin, such as the lower back, inner arm, neck or skin next to a bone, such as the spine will be painful. Other parts of the body such as the outer arm, upper back and shoulders are less sensitive to the tattoo needle. Of course people experience pain in different ways. I have a friend who got an ambigram
tattoo on his forearm and he said it wasn’t painful at all, while I have other friends who have gotten tattoos in that same spot who said they teared up, especially during the shading part. If you think you can survive the outline of a tattoo, just wait for the shading to happen! Bring on the pain!
This chart shows that pain caused by having a tattoo in specific parts of the body. From people who have experienced getting a tattoo, I hear its pretty accurate.

Thanks!