Well some of you experiences were typical, the whole gravity thing used to happen to me when I first started smoking, 35 years ago, I can relate to the floating while walking and to the food tasting better, the laughter, the munchies, etc... Sounds like the second and third time you definitely had better smoke that on the first time.

However, if you are actually expecting to see things like geometic shapes and halucinations, you will need something much stronger than Marijuana, I personally do not reccomend harder drugs but, that is just my opinion.

As for you experiencing everything Marijuana has to offer, not even close. Smoke in a relaxed enviroment with a few good friends, turn on your favorite music or video, grab a large soda and a large bag of Cheeto's, Doritos or any other chip varieties and relax. It will come.
Have fun.