I laughed at the first one—it was fun, but it still wore a faint hint of Axe Body Spray. Each successor seems to stand in front of the mirror and apply a few more squirts.
Ken Jeong is basically playing the same racist caricature as Mickey Rooney in Breakfast at Tiffany's, with the same unfunny results. But at least now the character is played by an actual Asian person so, hey, progress!(?)