Depends on how much you take. 3 grams and you feel warm and goofy. 5 grams and your house looks like it's moving. 8 grams and you're a blubbering idiot. (from my experience.) I reccomend having someone sober with you at all times, it's just a good idea for hallucinogens as a rule of thumb, cause you never know how you're going to react. I'd start with 3.5 grams (1/8th of an ounce) which is widely available most places for $15-$30; it'll last about five or six hours and you'll have a blast. Paranoia can cause a bad trip, but just have someone there to take care of the phones and stuff and you should be just fine.