Chick's pussy was already very big, and after she was pumped up with a pump it became huge. The guy could hardly stick his dick in that swollen pussy. The most curious thing is that the clitoris almost did not increase, but the lips became like marmalade. I wonder if the sensitivity increases or decreases in such pumped up pussies. I've never fucked one before, I'll have to try it.
What an interesting relationship the brother and sister have, not shy or anything, judging by who they did it next to. But their mother's reaction was amusing.