Whoopsie

When you make a bad mistake, but you try to play it off as not as bad as it really is.

Whoopsie!
I did a whoopsie!
It was just a little whoopsie...
PewDiePie did a little whoopsie

e-migrant

Person who migrates from one social media platform to another.

Example: viners migrating from vine to other platforms
Often tries to bring the culture from their old platform to the new one, without realizing that no-one cares about vine. They just don't quite fit in. This can cause people to dislike them as a whole and use their old social media title (e.g. viners) as a label to mock someone.

All these Vine e-migrants are really invading the platform...
When did Genius start caring about Viners?