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".

Examples

length markings

See also

• length markings
• penis chart
• bust measuring
• penis envy
• penis awe
• penis on stomach

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