Subincision
Subincision is a form of body modification involving the splitting of the underside of the penis, from urethral opening to base. Subincision was traditionally performed by Australian Aborigines as a rite of passage. Subincision greatly affects urination and normally requires the subincised male to sit while urinating. Advantages of subincision include greater sensitivity and the effect of increased width. Disadvantages include (obviously) the risk of surgery and increased susceptibility of STDs. The ability to impregnate (specifically, getting sperm into the vagina) may also be decreased. Subincisions heal quickly -- usually within 4 weeks.
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