pretend – v. to act as if something is true when it is not true

prank – n. a trick that is done to someone usually as a joke

prankster – n. a person who likes playing pranks.

get in on – phrasal verb. to become involved in

catch on – phrasal verb. to understand what is meant or how to do something.

viral – adj. relating to or involving an image, video, piece of information, etc., that is spread rapidly and widely from one Internet user to another.