A meatotomy (/miːəˈtɒtəmɪ/[1][2]) is a form of penile modification in which the underside of the glans is split, extending the urinary meatus.

[3][4][5][6] Outside of medical justification, it can be performed for aesthetic purposes and is considered to be an extreme form of genital modification.

Depending on the anatomy of the individual and the extent of the split, meatotomy performed with a scalpel may involve heavy bleeding, while crush and cauterisation methods are relatively bloodless.

Aside from the exposure of previously internal tissues, the newly enlarged urethral opening may hinder the ability to control the direction and shape of one's urine stream.

Individuals who have been meatotomized for sexual gratification report that the exposed surface area of the glans penis and access to the spongy urethra for sounding creates heightened physical pleasure.