Top Definition
A way of saying that someone or something is both bitching and the business at the same time. Similar to the tits.
"I just got a blowjob while playing Battletoads on the NES. It was the bitchness."

"Yeah, man, last night was the bitchness. I fucked Rachael on my crippled mom's hoverround."

"Baby, you're more than awesome. You're the bitchness."
by Stinger911 January 17, 2011

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