Say whether on smoke or food, but for me at least 12 hours from some crazy shit me and my friend smoked.
Around a day...ive done it in the middle of one day and when i wake up the next day i could still kinda feel it. only off of good weed though
almost 24 hours. I'm a small guy and I haven't been tokin that long and I got a HUGE hit off a bong and wasn't completely sober until sometime the next day. luckily it was all on a weekend so no matter anyway.