Too bad there is no backstory, why the neighbor was on the table, why he was so hard to punish her, though it is understandable - without a reason to put in the anus with a full run, few will put in. She deserved it. Or is it a neighborhood game? Like, you poured water all over my apartment, and I'll pour sperm in your asshole. This version I like more, and then everything looks different - not enough he gave her, for such a need much more!
This young slut apparently had her first ever experience like this, with three partners at once. If you pay attention to her face at the end, you can understand that she really enjoyed this experience and would love to do it again in the future.