A lot of people have a decision to make right about now: follow through on their promise and live with the consequences, or prove to the world that their word is as dependable as your average politician.
Leicester City, the club that definitely, undoubtedly, without question couldn't do it, did it on Monday. The Foxes, 5,000-1 underdogs heading into the season, clinched their first-ever Premier League crown with Tottenham's 2-2 draw against Chelsea on Monday.
Related: Leicester completes Cinderella season, clinches title with Tottenham's collapse
It's a fantastic story. It's also one that leaves many fans - and even one pundit - regretting their eagerness to earn some online attention by making eyebrow-raising and even outlandish promises earlier in the season.
Here are some of the best (and worst) online oaths made based on the belief that Leicester wouldn't be able to capture the hardware.
The trendsetter
Here's hoping the BBC studio isn't drafty...
The tattoos
There could be a lot of people walking around with tattoos of something Leicester-related on their backside in the coming weeks. This is but a very tiny sampling.
The straight-up disgusting
For our sake, please don't follow through on this one.
The spiritual
Never forget, there is no path to happiness: happiness is the path.
The Arsenal angle
Can Arsene do it on a cold, rainy night at Stoke?
The life-altering plans
This gentleman may need to invest in Rosetta Stone.
The colourful
Look at it this way, if Chelsea or Manchester City returns to the summit next season, this will also be applicable.