This is the feeling a writer gets when finding mistakes and typos in their old works. This feeling is especially strong if the pieces were published.
by KWriter January 23, 2015

Regretting something almost immediately after it happens. Usually leaves you wondering why you did what you just did.
Often occurs after text messages, sent e-mails, and that last drink you shouldn't have had.
Often occurs after text messages, sent e-mails, and that last drink you shouldn't have had.
"You probably shouldn't drink any more of that tequila, I bet you'll insta-regret it."
"Shut up, don't tell me what to do! (takes a swig) ...Ahh crap, I feel nauseous."
"Shut up, don't tell me what to do! (takes a swig) ...Ahh crap, I feel nauseous."
by The Luke Man October 10, 2009

The dejected feeling that is a result of discovering a use for something that you used to own but since have thrown away.
The hoarder felt purge regret when she realized she had thrown out something seemingly useless; but that item turned out to be valuable.
by andiebrite September 5, 2010

by CassCool March 11, 2009

An event that takes place after you pleasure yourself to some questionable shit. The event starts immediately after climax, in which you feel nothing but shame and regret and sometimes even suicidal urges. The event could last up to entire weeks before the "Train" derails.
After jerking off to pictures of people in the yearbook and to pictures of my aunt, the Regret Train hit hard. I immediately started attempting many different types of suicide.
by I put pp in your coke December 3, 2017

When a celebrity, influencer or politician write, post pics or comment on something thinking it’s insightful or inspiring for likes. Instead it has tag and drag written all over it. After receiving lots of backlash possibly putting them in the crosshairs of cancel culture. As quickly as the post, pic or comment went viral the apology expressing their regret for the post, pics or comment will be deleted.
Did you read Ol’ Boy’s post on Twitter yesterday?
Sure did and after the tag and drag session he went through. It’s safe to say he had Twitter Regret because he has since deleted the post.
Sure did and after the tag and drag session he went through. It’s safe to say he had Twitter Regret because he has since deleted the post.
by Starving Artist246 June 22, 2023

The regret you feel immediately after eating panda express. Either for the calories or the explosive diarrhea you know is coming soon.
Guy: let's get panda!
Girl: Uh... Dude what about the panda regret?
Guy2: just had three servings of orange chicken. I'm having mad panda regret.
Girl: Uh... Dude what about the panda regret?
Guy2: just had three servings of orange chicken. I'm having mad panda regret.
by Panda popper December 6, 2013
