It is used for anything that had you thinking 'I made a severe and continuous lapse in my judgement.' People who hear this now interpret it in their own way, depending on the context. It is used as a substitute for phrases that would of been used instead often times.
Big Whoopsie- used to show recognition of a mistake or minor accident
'You were not meant to be born.' 'I'm ashamed of myself.' 'I hurt myself.' 'I’m disappointed in myself.'
A heterosexual Dungeons and Dragons player, as it is in fact illegal to play Dungeons and Dragons and not be straight.
Wait, you are a boy who plays D&D and likes girls, that’s a Whoopsie No No Boy.
1. (verb) to want to take a breath but doesn't
2. (noun) to wait for an eighth rest
"I just did a whoopsie breath," said the clarinet player.
"You forgot to do the whoopsie breath," said the band instructor.