The act of taking a hot cup of coffee, throwing its contents in the face of an unsuspecting individual, and then running away. Useful for both purposes of revenge and comedy.
Mark: That twat cheated on you?! What did you say?
Chris: Nothing really. I was really calm about it. We just went to Starbucks, got some coffee, and just as she was sitting down, I gave her the ol' splash and dash!
Mark: Well played sir.
Chris: Wanna get some Chipotle?