Nightclub w/ drugs

I went to a friend's birthday party last night, I didn't intend to go since last time I hung out with them in the night club. I may not be an expert of night club, but I'm still a regular night club visitor; therefore, I will never be hesitated for hanging at club. However, ever since I went out with these group of friends and saw their 'true color', I always attempt to find excuses for avoiding them. The truth is everytime they go to clubs, they want to get super high~~ from taking drugs. I had never taken any drugs before, even I spent 4 years in US, some of my friends were smoking pot, I had never touched it, coz I know it gonna hurt my brain and body and even might get addicted. However, I had my first time since last month, my friends insisted me to eat the pill although I refused to take it, they even secretly put the cocaine powder into my beer. That feeling was crazy, my brain felt like going to explode and I lost my strength and conscious, my foot barely stood on the ground; all i want to do is just lying down. but my friends dragged me up and told me that I have to keep shaking my body and I will feel better afterward. well I did it and indeed, after shaking my body for awhile, I felt much better and awake although my head was still little bit pain. Well, it seem nothing happened to me, but next day morning I woke up and couldn't recall some memories, especially when I was high; my friends filled me in by telling me how did I act when I was high and made fun of me. It was pretty scary that I had no idea what was happened after got high and the worse thing is I couldn't remember anything at all. A friend of mine told me that because of the pill that my friend asked me to take early, it called E5, AKA '5 zhai', I don't know the real name of it; but I heard that is a synthetic pills and it was invented for depressive patients. OMG.

Well, Last night, the same thing happened again, I tried no to go with them, but my friends even came to my house and ask me to go; it's really not easy to reject from them, thus, I just go with some apprehensions. This time, the birthday boy delivered the beer to my face personally; I have to drink it coz everybody were watching ,and the pill as well, after drink it for awhile, I knew a major disaster gonna happen to me; I don't what happened to me again. next day morning, my friend show me the video he took when I was high. I can't believe the person in the video is me and I can't even recognize me at all. I was jumping around from couch to table, and trying to destroy the property of the club, smashing the speaker, singing and dancing. I become the spotlight in the whole room. I totally act like a different person, the behavior and attitude are cocky and annoying. I looked like an idoit and I hate that. After watching this, I swear to myself I will never let this happen to me again.