monkey business

US /ˈmʌŋ.ki ˈbɪz.nɪs/
UK /ˈmʌŋ.ki ˈbɪz.nɪs/
"monkey business" picture
1.

bêtises, manigances, farces

silly, dishonest, or mischievous behavior

:
Stop all that monkey business and get to work!
Arrête toutes ces bêtises et mets-toi au travail !
The teacher suspected some monkey business was going on during the exam.
Le professeur soupçonnait des manigances pendant l'examen.