Marge masturbates

Since she will be really embarrassed to ask Hibbert and Krabbapel to join her in a orgy, she decided to go with the second option: masturbate in the nudist beach. Marge choose a hidden spot, and there she lies, and starts masturbating.

First, she moves her fingers around her pussy, and then, she procedes to insert a finger in it, massaging slowly her clitoris. This provokes the firsts moans of pleasure from Marge, and makes Julia starts to masturbate too. Soon, Marge inserts another finger, and starts to rub her clitoris faster. This makes her moan louder and louder, but suddenly, her hands are taken away from her pussy...

What happens?