funny business

(informal)

dishonest or unpleasant actions If you try any funny business you'll be sorry.

Deceit, treachery, unethical conduct. For example, We suspect their outfit has been up to some funny business. [Colloquial; c. 1880]

verb

Name	Pronounced	Usage
Marilynn	MER-ə-lin, MER-lin, MAR-ə-lin, MAR-lin	English
EglĖ	-	Lithuanian
ClÍOna	-	Irish
Imogene	IM-ə-jeen	English
ŚWiĘTomierz	shvyen-TAWM-yesh	Polish (Archaic)
Kallias	-	Ancient Greek