My first IM injection was on a patient in a state forensic psychiatric hospital when I was a psychiatric technician student. I was pretty nervous since the patient was being released from 4 point restraints and was due for his Haldol Dec shot. My friend tried his best to "calm" my nerves by informing me that the patient was going to hit me. I gave the shot in the right buttock and prepared to get hit and then punch my friend for jinxing me. But, nothing. Patient stated that he didn't even feel it. I was relieved, punched my friend anyways, and went on to give hundreds of shots in the prison system that produced varying results of "didn't feel a thing" to "oh my God, I'm going to pass out in spite of being a hard core gang banger with tats covering 90% of my body".