The tag alias #81018 group_masturbation -> masturbating_together is pending approval.
Reason: This tag is currently a misnomer, requiring only two or more characters, while a group is three or more. This was noted 9 years ago but seemingly nothing has ever been done (I thought I made a request for this before, but couldn't find any trace of it?)
The suggested tag name fits existing tags like sleeping_together, bound_together, peeing_together, stuck_together, showering_together, etc.
There are other *_together tags like legs_together and hands_together, which refer to a single character, but I still think this is less confusing than the current tag name.