mischief

Drink led to mischief.

John's mischief, tying his shoelaces together, irked George at first.

Kirac, the leader of the rats under his charge, speaks to the major through his telepathic abilities that manifested after the alien virus infected him and his mischief of rats.

She had mischief in her heart.

It may end in her doing a great mischief to herself—and perhaps to others too.

To die like a man of honour, Sir Hargrave, you must have lived like one. You should be sure of your cause. But these pistols are too ready a mischief. Were I to meet you in your own way, Sir Hargrave, I should not expect, that a man so enraged would fire his over my head, as I should be willing to do mine over his. Life I would not put upon the perhaps involuntary twitch of a finger.

What the mischief are you? and how the mischief did you get here, and where in thunder did you come from?