I'm not right in the head!

you can chuck me on a fire, poke me in the eye
or kick me in the balls yet you still won't make me cry
but take away my Perry and my head just does not cope
i cannot seem to think and get a lump within my throat
there's not much that i care for, there's not much i would like
i just want you to know that i HAVE TO put things right
i hate my life i think it's s**t I've thought this for a while
except for times when you're around coz I'm happy when you smile