Alright lets just keep it simple. Here are the cliff notes to what I was trying to say (No need to make this a Hollywood script)...

Guy's shoot their wad on a girl holding a cum bong. When complete, the cum bong is poured into a second girls gaping pussy. The cum overflow (from the pussy) is then licked up and snowballing occurs...End of Fuck n' story. You want the full "Hollywood" script read the fucked up script above.