He gave you a link to a circumfetishist, I'd ask him to find a source that was a bit more medical.
Here's a few refutes for you.
|(There are no deaths today from medical circumcisions in developed countries.)
Dustin Evans Jr was born in Cleveland, Ohio in October 1998. He was circumcised by a Dr Russell soon after, who took so much shaft skin that the scar healed as a wideband stricture (a tight "collar") around his penis, preventing him from urinating. When he was given sevoflourane, an anaesthetic, in order to "revise" his circumcision, he immediately died of cardiopulmonary arrest.
His father said, "You think, 'What could go wrong with a circumcision?' The next thing I know, he's dead."
Ryleigh McWillis - death from blood loss
(1) Immediate cause of death: a) Multi-organ ischemia, due to or as a consequence of b) exsangination [loss of blood], due to or as a consequence of c) circumcision
(2) Other significant conditions contributing to death: Post-surgical exsanguination
Classification of the event: Accidental
Date signed: 19 January 2004
T.E. Chico Newell, Coroner
Those were in the US and Canada respectively.
|Studies of middle class British  and Scandanavian  schoolboys concluded that penile hygiene, as such, is at best poor and at worst non-existent.
And that's why over 90+% of them never end up circumcised right? Not to mention, elementary school kids don't REQUIRE any "special" penile cleaning.
|"What man after a night of passion is going to perform penile hygiene before rolling over and snoring the night away (with pathogenic organisms multiplying in the warm moist environment under the prepuce)" .
Replace man with woman and penile with vaginal. Women are fine washing in the morning, so are men.
|Smegma is produced by the foreskin’s inner surface and contains neutral lipids, fatty acids, sterol and exfoliated cells. Excretion of smegma increases in adolescence and peaks at age 20–40 years. Whereas initially it is a lubricant having a white or pale yellow color, with time, chemical transformations take place and it becomes mixed with epithelial cells, dirt and micro-organisms; these form aggregates and produce foul odors. The bacteria alone give off an offensive smell and most people consider smegma to be unclean .
Women have more smegma than men.
|Between 1988 and 2000 the rate of circumcision of NEWBORNS BEFORE HOSPITAL DISCHARGE POST-BIRTH has increased 6.8% per year in the USA [242
Absolute BS. http://www.icgi.org/Downloads/normal...ircumcised.htm
And if you read most of his rates they're from the 70s. The NZ one is a joke really. Yeah in the 70s it was 40%. Now it's under 1% (non-religious). Same with the numbers for England and Canada. Here are the numbers from Wikipedia
United States 2002 60.1% 
Canada 2003 11.5% 
Australia 2004 12.7% 
New Zealand 1995 0.35%* 
United Kingdom 1972 0.41% 
And an article on the declining rateshttp://www.cirp.org/news/iowacitypresscitizen07-28-03/
His physical "problems" list.
Phimosis: Completely normal until puberty and a bit after. The foreskin usually "loses its hold" on the penis completely upon the onset of masturbation.
Paraphimosis: Ridiculously rare but treatable without surgery
Zipper Injury: My cut partner has caught his glans in his zipper several times, should we cut it off?
Elderly men: I don't know about you but I'd like to have and enjoy my parts and if they have to be cut off when I'm old, that's well and good.
Bathroom splatter: A load of bollocks and easily preventable. And honestly, any guy can be messy, foreskin or not.
Balanitis: Since when was redness/itching a cause to cut off a body part? And honestly, frequent balanitis is a warning sign of diabetes that cut men don't have. A friend of mines dad got cut over frequent balanitis and turns out, he was diabetic - had he have known that was the cause, he would have been able to detect his diabetes sooner.
UTIs: Why cut a body part off to prevent this? Girls are more likely to get them than intact boys, should we cut them up too?
Bacteria: Should we cut off the hoods of women and sew them shut, because they've got way more than men.
STDs: Condoms, not surgery, prevents STDs.
Cancer: An intact man has a higher risk of breast cancer than penile cancer. Enough said.
Prostate cancer: I fail to even see how this one is related seeing as ALL MEN HAVE PROSTATES.
Cervical cancer: Cervical cancer is caused by HPV which is an STD. See my response on STDs.http://www.circinfo.net/scaleat_end.jpg
That chart is just a jokehttp://www.infocirc.org/uti2.htm
That one is much better.
Also, I'd go with the "you may have a penis, but I have a foreskin" on this one. Tell him you quite like your foreskin and he seems to enjoy it as well (if thats true hehe).