The forward curved knife that Agent Casper (Mandell Maughan) pulls in the train fight is a karambit. It has it's origins in Indonesia and is often seen in Pilipino martial arts.
Harry asks how many licks does it take to get to the human. This is from the 1970s commercial for tootsie pops which asks how many licks does it take to get to the center of a tootsie pop.