KA is right. Most people are like, "the first time was retarded... I didn't even get high!" that's what happens most of the time, bro. Give it another shot tonight with your friend and ask him if you're inhaling it right. There is a right and wrong way to inhale.
You might as well burn the 8th seeing as how you already have it in your possesion. If you're still not cool with it after that, then weed is not for you.