A combination of sex and Chinese dumplings. If a person eats dumplings and then has aggressive sex soon afterwards, the dumplings are referred to "pumplings". The "pumping" motion during sex gave "pumplings" its origin. Any dumplings eaten with no sex taken place afterwards will remain known as dumplings, not pumplings.
After the pool party, Angello stopped by the Chinese Restaurant, and went back to his hotel room to have pumplings with a hot little brunette girl.