Why cant you ungreen thumb somebody?! like if you accidently do it... :/
They forgot to make that option I guess. Who did you accidentally thumbs up? XD It's not like anyone can tell it's you anyway :P
Might have bleached your skin, that sucks
Lolwut ^ & it's just something they do. I don't think there's a reason behind it.
Done bun can't be undone