I’ve always been a 3 minutes man during sex, which was really depressing for me till I came across a technique that teaches sex practices and I applied it. Before sex I go online and look for very difficult math questions. I’m a 1st class mechanical engineer so maths isn’t a problem for me. While having sex I solve calculus, Laplace transform, Fourier series etc (fellow engineers can relate) in my head and this prevents me from cuming. Now I cod (cum on demand). I can go for hours with this technique till whoever I’m with gets satisfied then I stop solving and finally cum. It’s funny but effective.