My child wakes up full of beans each morning but her cousin wakes up like a bear with sore head and they could both have had the same amount of sleep. (Google)
I have to watch the sleeping though, too much without the machine and I am like a bear with sore head. (Google)
Anyway I am being extra nice to him cups of tea, he is going to work on nights tonight so will be like a bear with sore head tomorrow. (Google)