@kenmac if indeed the man suffered mood swings then we can rule that accumulation of the hormones in a man got some side effects.. Fundamentally this points the differences btwn man and a woman..

>> On whether depositing outside the bank works ? Well , my biology teacher used to say an aroused man can't make rational decisions coz more blood is concentrated around the abdomen and less blood gets to the brain... logically you are more likely to focus on the excitement now rather than consequences.Try it at your peril

@Impunity - prolactin provides the body with sexual gratification after sexual act. It is found in semen, serum and even urine. Relax, men and women naturally share a lot of common hormones in varying proportions! For instance,did u know women also have testesterone? And that having a deficiency or excessive amts has its side effects on them,such as hoarse voice,hairiness,etc? Yet women have no testes! Well, not all anyway if i recall Semenya et all. Men,too,have oestrogen and it increases as they get older!

@kenmac, there exists a myth that a man with a pine tree cannot think or make a decision as blood is concentrated elsewhere kwa sehemu nyeti, at the expense of the upper head (on his shoulders). If u notice, men humping in an area where there is high risk of being caught (parked car in a busy area)will be busy doing the act but will also occasionally be looking around, showing they are thinking...processing info.
A pine tree would require abt 120ml of blood, while an adult person has circa 6 litres of blood so only a mere 2% of his blood is locked in his member during the pine tree. So it can't really affect the thinking process - and why should it be the brain in particular to suffer blood deprivation? Why not the leg?! Or the arm?! BTW, it is actually a bad idea and a medical emergency if the pine tree is on for > 3hrs (priapism) as the blood/tissues in there will start reacting to oxygen deficiency. Note this blood is locked in the member and is NOT circulating in the blood system during the tenure of the pine tree! It is vital therefore for the pine tree to relax to allow for re-oxygenation before resuming shughuli ya kujenga taifa.

@mzazii - That Catholic nuns are happy is really an opinion or perception , and is not grounded on any scientific basis. On ur 2nd point, women's moods are chiefly dictated by the fluctuations of ther 2 main hormones, progestrone and oestrogen, that make them more emotional than men, and so introducing other chemicals will most def affect this balance. my surmise.

@ Wa_ithaka. It requires so much discipline on the man, and tonnes of selflessness for this to be succesful. Some men do achieve it though. As a FP tool, it has a high failure rate esp. where there are rounds 2,3,etc. coz some sperms are still stuck inside the sperm duct in just the same way drops of soda are left on the straw u used to sip long after u r through. Some sperm may escape along with the lubricating fluid or just before a quick log-out can be done, meaning although only 2 of u into jumped bed, the result is at least 3 ! Plus some men would not co-operate, as they believe they must deposit their entire gooey stuff in the woman for them to consider that they have had sex. Some men are known to have actually tear the tip of CDs to ensure a deposit is made.

I have used this method with my wife for the last 5 years and it has worked perfectly for us. The only thing you need, is to ensure is to visit the loo after every round coz urine will kill any remaining sperms in the duct.

It is tricky though since your timing has to be perfect.

A tall order!!!
Its like someone asking you to spit out nyamchom after you have chewed it soft (for the last 30 minutes) and your tongue has just push it behind the throat!!!