Doing a Cal

When you're too cooked and sleep in, miss your alarm and end up late for work

I've had a massive night out getting on it on a school night... I went to bed in the early hours of the morning and now I've woken up to realise that I've slept in and now I'm late for work... I finally get to work and all my who were good enough to make it to work on time tell me that I've 'done a cal'! sleeping in is defined as 'Doing a Cal'