Although it is not accepted by most of the scientific community a very small percentage of males can naturally have multipul orgasms there have been a few documented cases of this...

However...
Clifton: having 12 in 15 minutes seems to be a bit of an exageration to me... I'm not saying it isn't possable, but the most orgasms ever documented were 6 in a 36 minute period... if you can indeed have 12 in 15 minutes I suggest you contact guinesess book of world records, but then every guy loves to exagerate his sexual prowess especially on the internet.

Having multipul orgasms is possable to learn: http://www.sex-project.com/multiplemale.shtml

But if you really want pleasure, check out tantra... or combine meathods... anyways... good luck.
Tennyson