For the love of god see a doctor!

Dude, you need a ******* enema or something! That is incredibly unhealthy.

Start eating popcorn that helps with it. Caffeine I heard is helpful as well...Or rather it's supposed to given that when I was little and hadn't dropped one in over a week that my folks started giving me oreo's with dinner in hopes that it'd help smooth things along...And corn...Lots of corn...Corn in places I didn't want corn.

Damn dude. Drink some apple juice or Somethin. Your going to hurt your body. Not good to hold it in

On word: Senna.

I feel your pain! I was so constipated and bloated with a food baby that someone asked me if I was preggo. It's already bad enough that at my tiny size when I eat you can see my food baby, but not pooping doesn't help!

Holy shit!! (No pun intended) 3 weeks dude you're going to be in a "hole" lot of pain.

Go to the doctor

Dude, if you've been constipated that long, see a doctor. And eat fiber-rich foods like lightly steamed veggies, brown rice (NOT white, as that has much of the fiber removed), and dried fruits (such as prunes and dried apricots). Dried fruits are great for keeping you regular. Drink lots of water as well to sort of "clean you out".

How is it even humanly possible to be constipated that long? What exactly have you been eating?