Created on 14 July 2013
Idiom
Get up on the wrong side of the bed
Meaning
To be in a bad mood – to be grumpy or unpleasant from the moment you wake up for no obvious reason.
Origin
In Roman times it was considered bad luck to get out of bed on the left side. Therefore, if you got out of bed on the ‘wrong’ side (the left side), it was thought that you would have a very bad day.
Examples

“Why are you in such a bad mood today? Did you get up on the wrong side of the bed?”

“I feel terrible. I definitely got up on the wrong side of the bed today. Actually, maybe it was all the wine I drank last night!”

“You're annoying everyone at the moment. You're not going to have any friends left if you keep getting up on the wrong side of the bed!”

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