How many tattoos is to many for a guy? Where is it sexy for a guy to have a tattoo?

I have seen many guys with several tattoos on there bodies and i don't know if it works for them. I will have 4 tattoos come April 20. I have a skull on my shoulder, a clown on my left forearm, praying hands on my chest and my next one is going on my right calf. I plan on getting several more. I don't know if i want to cover my whole body but i would like to strategically place tattoos on my body not cluttering one part of my body.

Did anybody get hair tattoos? (designs shaved off at the back of the head) What's it like?

Did it impress people around you, did it affect your job, did it give you a hard time so you couldn't wait till the hair grows back, where you the center of attention and supa-dupa popular or were you considered a weirdo? Please, give me loads of feedback, how does it affect your everyday life? I'm getting one myself and just wanna hear people's opinions on what's it like having a hair tattoo...Thanks!