<s>[INST] Hi im a 17 year old male since about the age 4 i have always thrusted things to recieve pleasure mainly a pillow. I find impossible to ejaculate using my hand. Even when a girl does it for me i still can't do it. What i want to know is will my masterbation technique effect me during intercourse and also does this technique cause damage to the penis? [/INST] Hello, The masturbation in any technique is not known to cause penis damage or not affect sexual intercourse after marriage. So you may need not to worry about that. Hope I have answered your query. Let me know if I can assist you further. Take care Regards, Dr Parth Goswami, General & Family Physician </s>