You know what’s really great to do? 

Wind up your sister when she’s on her period.

She came up with this extravagant plan to move to Ireland when she’s 16 to go to college, I told her it was stupid and she cried, screamed, swore a lot, stormed downstairs, fell down the stairs, screamed some more and now she’s ranting at my mum about how fat I am.

Meanwhile, I sit up her laughing at how little I had to do to set her off.