Ohhh, it's like a PENIS. I see. PENIS. Also, the video's description on youtube:
"Marcia (Marsha) Brady brings a Bunch of her Sexy High School Girl Friends over for a meeting, all wearing Very Short Dresses - Peter starts playing with his "Volcano" - As it "Heats Up", he calls the girls over, and they all gather around him - His "Volcano" then "Erupts", spewing hot "Lava" all over the hot teenage girls, covering them from head to toe!"