This tag describes the situation where a [[mouth mask]] (such as a [[surgical mask]]) is [[mask_on_crotch|worn over the crotch]] as a substitute for [[panties]].  This is shown either by stretching the ear loops of the [[mask]] to use as leg holes (see post #2582922), or more commonly by tying, interlocking, or otherwise binding multiple masks together to be worn as a larger outfit often incorporating a [[mask bikini]] (see post #4048975, post #4329843). Ironically, the character involved may or may not additionally being wearing a mask properly over their face. This theme developed in response to the [[coronavirus pandemic]] of 2020 where mask usage was brought into stark focus.

For the converse of this tag, where [[panties]] are being worn as a [[mask]], use the tag [[panty mask]].

h4. See also
* [[mask]]
* [[mouth mask]]
* [[surgical mask]]
* [[mask on crotch]]
* [[mask on breasts]]
* [[pervert]]
* [[female pervert]]
* [[wardrobe error]]
* [[mask bikini]]
mask panties