A deceitful confidence trick, or mischief causing discomfort or annoyance.
I spotted his next shenanigan – saw it coming – and so avoided being fooled.
Mischievous play, especially by children.
Shanti and Tom are playing noisily upstairs again. They’re up to their usual shenanigans.
Deceitful tricks; trickery, games.
The advertisement said it would cost $50, but they charged me $75 at the register. I declare shenanigans.