Sounds like weed to me.

When you smoke it you get high: Check.
When you come down you get tired: Check.

Seems to me that those are fairly normal effects!
SmokeyPotter Reviewed by SmokeyPotter on . weird weed... that half i got a week ago... well today when i was breaking it up i noticed something it smells fine like piney and shit when the nugs are together but smells weird when i break the nugs apart ive gotten high on it before but im just wondering what could it be mold ferts what. Rating: 5