Powerpuff Girls Humping

The professor just invented a new serum that will make all of the powerpuff girls even more powerful. it should be really helpful this upcoming fight with mojo jojo. both blossom and bubbles give it a try, but it has some very unexpected side effects. the two of them start to feel very flushed... and very horny. they can't help but take turns humping each other. they just love the feeling of grinding their pussies up against each other's asses over their skirts first, then over their panties and finally over their bare bottoms! they hump one another until they both cum hard. they lay there gasping for breath. looks like they'll wanting more of the professor's special serum!