Note: First of all this is MY experience. Pain differs from person to person.
The hardest parts are just where the nerves are close to the skin. Crook of the arm and next to the elbow... Don't know the english expression for this, but you might have got this strange, almost electric shock once you've butted your elbow against something... that's a nerve going right next to your bone.
Bones don't hurt as much, the vibration of the needles just seems to go right through your body, which makes your vision funny and doesn't feel quite comfy.
It was also quite tough when the needles came down to the fibres near the wrist. Again nerves hurt a lot more!
The pain is hard to describe actually. I'll try something real quick
[butz tries to rip his skin up a bit with various household things]
Okay. Take a small fork and scratch yourself for a minute or two. Just until the point it really starts to hurt. Then scratch more. Imagine now that up to 15 very fine needles are constantly being rammed into your sin while the whole tattoo gun is moving. Sometimes it feels like stiching, sometinmes like scratching.
Hard to describe really, just look at
this or
this or search other first tattoo things on youtube. Although I've got two tattoos I still can really feel with the guys, for I've been in the same situation twice :-) Only I only screamed once (very loud that is!!) and my left arm is completely covered in ink...
I really hope I can help you showing that the final theme MUST be worth the cost and the pain you're going through!
Once I was lying on the chair of pain when suddenly 2 girls entered. They were 15 and had a fake permission by their parents to get each other's name on the butt... you all know girl's friendships do ya?! :-) Luckily my tattooer sent them away and called their parents before returning to work. That was a great laugh!!!
greetz
der butz