As we all know, tattoos will be very painful. After all, it is a micro operation to pierce the skin. It is not painful or realistic at all. If you want to find the most painful part of the tattoo in your whole body, which do you think is it? I think it's an armpit.
Why is tattooing in the armpit more painful? Because there are many sweat glands in the axillary cortex, and a large number of nerves and blood vessels are distributed at the same time. It is also a dense gathering of lymph glands. Therefore, axillary skin is one of the most sensitive and weak parts. In such a soft and weak place, it takes a few hours of needle pricking. It's really difficult for ordinary people to survive.
Source: @matti3105