The extreme form of the verb fruck. A headfruck is to meet the love of your life only to find out that your closest, bestest friend does not approve. A truly painful experience that maywell lead to either losing your best friend or giving up the love of your life. Such a result is known as a complete headfruck.
"What's wrong with Peter he looks so miserable?"
"He's fallen head over heels in love with a real babe, but now John is pissed off with him cos he doesnt hang out as much as he used to. He's caught in a complete headfruck"
Irish term which has several meanings usages. The meaning is fairly intuitive-
1)verb; ... wrecks my head/...is wrecking my head; somethingannoying or confusing.
2)Adjective: Headwrecking
3)noun; Headwrecker/wreck-the-head: an extremely annoying person.
1) This maths is wreckin my head.../that fuckin crazy frog ringtone wrecks my head!
2) calculus is headwreckin!(it's not generaly used in any other context, like "headwrecking calculus")
3) That Lorna is a headwrecker/wreck-the-head knobjockey.