I do not no why everyone is calling him fucking stupid. This may not have happened to you but has happened to me. It is weird. One week i had smoked alot more than normal and several times a day. And THC stays in ur blood for a month but ussually doesent do anything. So one day i had smoked the night before but the next night i was out biking. going very fast with some friends through a road. which had got my blood flow going. I came to a quick stop and just sat down at the stage. a place i usually go just to hang out. anyway with my blood flow going and heart still pumping and heavy breathing the blood had a more than normal amount of THC which pumped through my body and eventually into my head. about 30 seconds after sitting down i felt almost stoned. But without the red eyes and laughing alot. i could still kinda act normal but everything looked like it does when ur baked. kinda hard to explain but everything stands out type of thing. Anyway all that was happening and i was like wtf??? i told my friends and they thought i was nuts. I went home and found many forums telling me what happened and it all made sense. i found 5 sites all saying the same thing. that thc is in ur blood and after exercise and not cooling down and stopping right away. this causes the thc to rise to your head.