Top Definition
Two toddler siblings take a shared bath. While one contentedly entertains himself, the other stands up behind him and urinates on him.
I only turned my back for a second; when I turned around Manual had initiated a Nicaraguan Sibling Surprise on Isabella. She lucky that he only peed on her back.
by Crack Jacky September 02, 2009
Free Daily Email

Type your email address below to get our free Urban Word of the Day every morning!

Emails are sent from We'll never spam you.