WordNet sense 1 (a prostitute's customer):

john, whoremaster, whoremonger

WordNet sense 2 (deceive somebody):

fob, fox, flim-flam, play a trick on, pull a fast one on

WordNet sense 3 (a ludicrous or grotesque act done for fun and amusement):

antic, caper, joke, prank, put-on

WordNet sense 4 (a cunning or deceitful action or device):

fast one

WordNet sense 5 (an illusory feat; considered magical by naive observers):

conjuration, deception, illusion, legerdemain, magic, thaumaturgy, magic trick, conjuring trick