Yeah, sounds totally like a head rush. Sometimes those are fun to have. I try to avoid them being an old man and all. My first and only accident while smoking ad driving happened because of a head rush. I was doing like someone previously said...smoking, but not 'breathing' between tokes, after I exhaled the next inward breath was another toke. So I'm on the way in to work and doing this and stop for a light. As I'm exhaling a hit, a head rush sets in. I'm panicing b/c I'm not really sure how long it's going to last. In the midst of that, the light turns green. I was completely disoriented and trying to go on my way but didn't realize that the car in front of me hadn't started moving yet. THWAP!!!

No major damage but I damn near pissed my pants while the cops were there. Luckily, I had been drinking coffee so my breath didn't smell too bad. The couple I hit and the cops were real nice about everything and I made it to work....having survived lord knows how many mini heart attacks.