1 definition by NateMac

Top Definition
When a girl is giving you head, and right before you cum you push your wang to the back of her throat, making her gag, but blocking her mouth, so vomit comes out her nose and runs off your balls, like 2 chunky waterfalls.
Man i can't wait to get off work so i can give my girl the Double Chunk Waterfall
by NateMac June 13, 2006
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