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to hang a ba
01
to express contempt or disrespect to a person by showing one's naked backside to them
![to [hang] a BA definition and meaning](https://cdn.langeek.co/photo/46360/original/?type=jpeg "to [hang] a BA definition and meaning")
Example
He went to the window and hung a BA — just for the hell of it.
Please tell me you did n't hang a BA at the headmaster after graduation.
