2 definitions by Charlie Apples

Alt: Got up on the wrong side of the bed. (Past Tense)
An expression that is typically used to describe a grumpy or irritable person, especially when the reason for their unhappiness is unknown.

It can also be used to describe when somebody wakes up in a bad mood which then lasts all day, possibly because they didn't get enough sleep or had an unpleasant dream the night before.

The phrase dates back to Ancient Rome, where it was considered bad luck to get out of bed from the left side, which itself originated in a very old superstition saying that everything related to the left-hand side was inherently unlucky. The modern English expression reflects that myth with a tongue-in-cheek play on words, suggesting that a grouchy person must have gotten out of bed on the "wrong" side, as opposed to the "right" side.
"What's with Wendy? She seems annoyed about something."
"I don't know, maybe she got up on the wrong side of the bed today."
- - - - -
"You're acting like real jerk!"
"Sorry, I just woke up on the wrong side of the bed this morning. I'm in a bad mood, but it's not your fault."
by Charlie Apples May 26, 2015
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descriptive noun

Describes a person who essentially ruins other people's fun, either because they openly disapprove of what other people are doing, or because their unpleasant attitude annoys or depresses everyone who would otherwise be enjoying themselves, if it weren't for that person acting like a 'wet blanket'.

The term is probably American in origin, first being used as slang in the mid 1800's. It was meant to compare a person to a wet blanket used to extinguish fires by smothering them, similar to how such a person would "extinguish" fun and excitement in social situations. Another, more modern interpretation of the term likens a dislikable or overbearing person to the aggravating, uncomfortable feeling of being covered by a blanket when it's wet.
"William was at the party last night and kept bumming everyone out by lecturing them about the 'dangers of alcohol and drugs'. Ha!"
"Yeah, that guy is such a wet blanket."
by Charlie Apples June 6, 2015
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