"Electrical stimulation of certain hypothalamic regions in cats and rodents can elicit attack behaviour," is what we can read in Nature today. But also "Neurons activated during attack are inhibited during mating, suggesting a potential neural substrate for competition between these opponent social behaviours." If the same holds for human beings, which is highly probable, then we are not far away from the situation in which we can replace Cialis by a healthy dosis of instant neurostimulation or switch the neurostimulator to Arousal Mode No. 2 to beat the guy that left the bar with another one’s girlfriend. As long as they do not take my Erdinger, I’m fine.
Jokes aside, it is known that both regions in the brain are closely located to one another, together with the part that controls voluntary urination. So my advice: don’t try this at home.