Rowdy, foolish partying or noisy fooling around — making a big fuss without regard for others.
深夜に若者が庭でバカ騒ぎをしていて眠れなかった。
Young people were making a racket in the yard at night, so I couldn't sleep.
卒業パーティーでうっかりバカ騒ぎして先生に注意された。
At the graduation party we got carried away and were warned by a teacher for fooling around.
近所迷惑になるようなバカ騒ぎはやめてください。
Please stop noisy fooling around that disturbs the neighborhood.