1. To over-think to the point of confusion 2. To have thoughts of random things circle in your head
3. to have someone have sex with your face, and or eye sockets
"Ive been thinking about this whole thing to much and im just head fucking myself."
Or "Some guy head fucked me last night and I have sore eyes".
Said to someone who fails to comprehend his or her own present situation. Often perceived as a misinterpretation of past events or activities. It is advisable to remind the person in question (if you appear to be in verbally discernible range), of his or her mistake to avoid any forthcoming embarassments on his or her part.
(Brief exchange prior to an imminent Science Test)
Karl: Hey Ev! *shakes his hand* Fail with honor!
Evan: Thanks. You too.
Karl: Ayan! *shakes his hand* Fail with honor!
Ayan: What?! Hey, I'm passing!
Karl: Ughh.
Evan: Haha, head up in the clouds Ayan!
When you marry someone exceedingly quickly and then years later reflect on how your head injury may have led you into it, using it to conveniently explain away a move that was more likely just sheer stupidity.
I look back on my head injury marriage and see with such clarity now how bad an idea the whole endeavor really was.