Meaning

2 senses
  1. (UK, slang, uncountable)Caning the backside profusely, an abusive initiation ritual to which trainee soldiers are subjected.

  2. (uncountable, vulgar)A sexual act by which the rectum of a person prolapses due to excessive anal sex.

Origin

From baboon + -ing: in the sense of caning, because of the bright red buttocks (like those

From baboon + -ing: in the sense of caning, because of the bright red buttocks (like those of a baboon) that result.

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See also

neighbours in the dictionary
babooning — meaning, examples, forms, synonyms | Krumeto