There Are many Different meanings for 'sickhead'Mostly Used if you see a very angry and
abrupt person who is very stressed and if quite scary because of it. Another definition is a very unhygenic person....Greasy,
Oily,and just really horrible to look at that it makes you
feel sick...One more is if a person randomly Starts Shouting.
"
ERGH look at that man his hair is all
slicked back hes such a
sick head!"