Bum-bum

Origin

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Full definition of bum-bum

Noun

1. (childish or belittling) The buttocks or anus.
• 2016, Jussi Adler-Olsen, The Alphabet House, Kröner sat down heavily, staring at Petra's retreating bottom with its fluttering white bow as she finally continued her rounds, “Lovely bumbum, isn't it, Herr Standartenführer?” he said, addressing James.
• 2022, Charles Dennis, There's a Body in the Window Seat Chapter No More Lugosi, Jonathan lies atop Mortimer, who falls backward to the floor. (Martha asks: "Did you hurt your bum-bum, dear?")
• Flying Alone, MMORPG: Rebirth of the Legendary Guardian 7 Anthology, "Little Yan Er. It's no good sitting on a boney dragon. You will hurt your little flat bum bum!"