Genital tattooing

There are several probable reasons for this: the genital area is sensitive, it is not often publicly visible, and is covered with hair unless intentionally removed.

Also, some tattooists refuse to place tattoos in these (and other) areas for a variety of reasons.

[2] Genital tattooing may have been decorative surgeries practiced during Paleolithic times and archaeological evidence has survived to this day.

Evidence regarding explicit genital male representations were found in art made in Europe approximately 38,000 to 11,000 years ago.

Others have used genital tattooing in a BDSM context, for example to indicate "ownership" of a submissive by a dominant.