Saying a person or entity "has some ‘splainin’ to do" (in a Cuban accent) is a humorous way of suggesting that they have done something illegal or otherwise embarrassing.

The catchphrase dates back to the 50's "I Love Lucy" show.
"Dude, asdfghjkl;!!!... why are my briefs pink?? Lucy, you got some 'splainin' to do!"
by rickirichardo January 8, 2013
Get the Lucy, you got some 'splainin' to do! mug.