Pokemon are creatures that reproduce through auratic exchange and do not have sex through intercourse. When a genetically male and a female of appropriate pairing bond with each other they will stimulate each other through licking, rubbing, and mounting of their featureless groins or equivalent surface area which stimulate erogenous nerve endings near the surface akin to that of the glans penis or clitoris. This stimulates hormones and aura receptors within the two Pokemon which causes aura emanation which will meld both life energy and genetic information into an egg externally outside of the parents.