create implication penis_grab -> grabbing

BUR #4744 has been rejected.

create implication penis_grab -> grabbing

Adding the same implication as breast/pectoral grab.

Should those tags also imply what they're grabbing like penis, breasts etc? Or is there a reason they're not implicated?

This bulk update request is pending automatic rejection in 5 days.

This bulk update request has been rejected because it was not approved within 60 days.

The bulk update request #4744 (forum #180970) has been rejected by @DanbooruBot.