LONDON — The Internet never forgets.

This was a lesson two football fans learned the hard way on Monday night, after tweets they sent back in 2015 about Leicester City — and how they "will not win the league" — came back to bite them.

First up is Adam Devlin, who was so confident that Leicester wouldn't win last December that he made the following promise.

Leicester will not win the league. If they do i'll get a Leicester badge tattooed on my arse. — Adam Devlin (@Adam1Dev) December 8, 2015

People even warned him what would happen if he was wrong.

Flash-forward to Monday night when Leicester became the Premier League champions, and Devlin was regretting some of his decisions.

Kill me. — Adam Devlin (@Adam1Dev) May 2, 2016

He wasn't the only one, either.

I will chop off my balls and feed them to my dog while recording it if Leicester win the league. That how sure i am they will collapse. — Assist Wizard (@ArsenalsCannon) December 13, 2015

As the season progressed and Leicester kept up their run of form, this Arsenal supporter's tweet started to get more and more attention.

@ArsenalsCannon Fuck off who found this FFS — Assist Wizard (@ArsenalsCannon) April 3, 2016

So much attention.

@ArsenalsCannon Would people stop retweeting this right now. Thank you — Assist Wizard (@ArsenalsCannon) April 30, 2016

On Monday, his reaction was similar to Devlin's.

Unbelievable. Speechless — Assist Wizard (@ArsenalsCannon) May 2, 2016

The lesson? No matter how sure you are about something happening, never, ever commit it to a tweet.

Ever.

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