Last Night=scariest Night Ever

holy shit. ok so I met up with 3 of my friends at like 12 am. we go to this elementary shool to chill and rip my bong. Then we drive to CVS to get food and stuff and then went home.
We pull into my friends nieghborhoods main road and see a cop, so we took the next side road and get out the car. I grabbed my backpack that had my bong, weed, joints, beer and my video camera in it and go to the shotgun side of the car where my friend is pretending to whipe cearal that we spilled out the car so that when the cop comes he sees why we stopped. When the cop comes, he rolls down his window and asks what we are doing and where we were going. We told him that we spilled cereal and that we were going home. Then he drives away. We were so scared that we decided to ditch our plan to drink outside a lil later. so i had to walk home by myself at 2am with all my stuff (weed, bong, cam....) I live like 8min walk away from where we were. i put the weed,bong n beer into a separate bag and held it to my side, so the cop couldnt see. So then im walkin back on the main road and the cop passes me and then stops. Once i get to where he was he rolls down his window: it was about 2 am and I was really fucked up because we smoked like 4 packed bowls each.
cop: "hey, where are you going?"
me: "oh, im just walking home."
cop: "where do u live?"
me: "just over by ******"
cop: "you are walking all the way there? didn't that girl you were with have a car?"
me: "yeah but she had to go home asap, plus its only like a 5min walk for me"
cop: "I was just wondering what you were doing out so late with all thoes bags, because there have been houses that were paintballed"
me: "Oh, well I dont live here so I don't know anything about houses being paintballed"
cop: "ok then"
the cop car was about 1 foot away from my left the whole time and i was holding my bong, weed, and beer in my right on my side so that he wouldnt see. I got so scared i almost shat in my pants.

anyway was the cop supposed to tell me what my rights were befor talkin to me? or is that only when someone gets arrested or something?

do any of you guys have similar stories?