noun.
Definition
1. Derived from head change: the point where a stoner's mind goes from sober to high and feels a euphoric kick in the
head; Head exchange is to mean the point where a stoner's mind on one strain of
weed is changed to another state of high when smoking a different one.
Definition 2. See fellatio. (But where she sucks on the head of your
cock just a few seconds more just before taking the rest of the shaft. bomb.com]
Stoner 1: Dude, you go from funny and chill when smoking OG Kush, to hungry and funny and chill when on
Blue Bream.
Stoner 2: Must be the
head exchange I get when we go from this strain to that one.
Stoner 1: Dude, hehehe, after your girlfriend was staring into the tip of my dick after she saw how big it was, shes also went into a bit of a
head exchange, amirite ?
Stoner 1. Dude, you go from funny and chill on that OG Kush, to funny, hungry, and witty when on that Northern Lights.
Stoner 2:
Bro, hehehe, your girlfriend went into a
head exchange the moment she saw the tip of my dick.