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Basically in it's most literal sense it means "one who fornicates with whales" but it is a very diverse term and can easily replace a few of the swear words you'd normally use.
by KTWBTKY.com August 25, 2011
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One who goes after or bangs fat chicks.
"Did you see that girl?"
"Yeah she was at least 400 pounds, he's a whale banger."
by AlfiePalmer1379 August 16, 2013
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