Hello, this is Dr K99. Answers are not medical advice and do not constitute a Dr/patient relationship. Please consult your Dr for medical advice.
Hello and welcome to Just Answer. Yes you can learn to make a more forceful ejaculate by learning to flex your PC (pubococcygeus) muscle along with the contractions of the ejaculation, The PC muscle forms the floor of the pelvis and is the muscle you contract to avoid urinating if you have to go but do not want to.
You can start off with sets of 20 3-4 times a day. Hold the contraction for a few seconds and work up to 10 seconds. You can do this while driving or sitting at a desk at work.
You will need to learn to do these contractions while you are ejaculating. This can be learned through masturbation.
Hope this gives you a good start.