I like British slang too. I believe that the word “scarper” originated in rhyming slang: “Scapa Flow” (the main British naval base in both World Wars) for “go”.
If I am wrong, I’m sure someone will correct me.
Watch Hoboken Mayor Dawn Zimmer after she accused New Jersey Governor Chris Christie’s administration of withholding Hurricane Sandy funds scarper from The Kelly File reporter who confronted her. Meh.
http://www.hapblog.com/2014/01/watch-new-jersey-mayor-refuses-to.html