When balls are inserted through a glory hole or similarly sized opening. Usually includes a penis inserted through the same hole. If body parts other than penis & balls are inserted through the hole, use kabeshiri instead.

Scenarios:

• glory_hole
• milking_table
• cock_stocks
• portal (if placed on a wall or other surface so that it looks like a glory hole)

Also see:

• knotted_glory_hole
• stuck_penis