Stop It You're Killing Me Lyrics

Lyric discussion by foaLtaeM 

Cover art for Stop It You're Killing Me lyrics by Therapy?

I'm not very good with abbreviations... Can someone explain what a "head O.D." is ?

Pretty sure it just means "Over Dosed" as in a drug overdose though in this context I think its referring to be "dosed" with a belief. The preceding lines are

"Love is for the weak Or so you'd have me believe The thought's killing me"

Also I think what the lyric should be read as "a head o.d'ed."

Took me a minute to figure out how the phrase fitted into the lyrics but I think that's a pretty decent approximation.