French
French speaking countries
* to have the head in the butt
Expression used here and there by Some People
It means to be feeling hazy, tired or not feeling that well.
"J'ai la tête dans le cul ce matin: j'ai à peine dormi de la nuit."
"I have the head in the butt this morning: I've barely slept this night."
6 out of 10 French speakers have heard this