I have been an RN for 27yrs.,most of it has been in er. I was shown a technique about 2o yrse ago,that really works consistently. Patients are amazed that the needle does not hurt. I make a wide v with my thumb and the rest of my hand. I count to 3 and simultaneously inject the needle at the same time I slap the muscle. I give the injection between the wide space of my other hand. It is important to slap the muscle the same time the needle is inserted. Also do the same thing on removal. Count to 3 to help you do it spontaneously. Has anyone ever used this or heard it? Let me know. Thanks