penis_measuring
Measuring a penis, a phallic object, or the depth of a possible penetration.
Typically presented as either using a ruler or a body writing on the receiving end's stomach to gauge "pleasure" based on the reach (length markings).
Pixiv's tag-equivalent is "kafukubujougi", "lower-abdominal ruler".
See also
* penis chart
* bust measuring
* penis envy
* penis awe
* penis on stomach
Aliases: none