The study also highlighted the encounters that were most or least likely to brighten someone's day. Seventy-five percent of respondents saw cutting in line as the annoying behavior most likely to dampen their mood, while doing a good deed was most likely to improve one's disposition, said 47 percent of respondents.
Stumbling across a bargain, compliments from a stranger, getting a letter and being greeted by a pet also topped the study, part of an advertising campaign for Plusnet Internet services called #LovesYouBack. Another top pet peeve was when others forget to say "thank you."
In the spirit of making Mondays less dreadful, the company allows customers to nominate a colleague who brightens their day on social media with the hashtag #LovesYouBack.