nipple tweak
The art of pinching a person's nipples and rolling the tips between your fingers as if tuning the dial of a radio.
If the nipple-tweaker is also pulling on the nipple, it can be tagged nipple_pull as well.
Use nipple rub if the person is “caressing” the nipple instead of pinching it.
See also
The following tags are aliased to this tag: nipple_pinch (learn more).