Math!

"Math!" is a term that's usually used by Finn in the cartoon "Adventure Time", and is usually a replacement for the term "Fuck!". Similar sayings are "Math this!" which means "Fuck this!", "Math that!" which means "Fuck that!" and "Mathmatical" which means "Awesome!". The word "Math" is pretty much a replacement for the word "Fuck", with the exception of "Mathmatical".

Jake: "Finn! There's hobgoblins at the door..."
Finn: "Oh Math!"

Ice King: "I'm going to kill you now..."
Finn: "Math that!"

Jake: "Ok, we're surrounded by skeletons. How do you want to handle this?"
Finn: "Let's Math them up!"