There is a long-standing rivalry between Harvey Mudd and the nearby Caltech; except this rivalry is basically unacknowledged by Caltech. For example, in one prank, students from Mudd "stole" a memorial cannon from Caltech  (originally from the National Guard) by dressing as maintenance people and carting it off on a flatbed truck for "cleaning"; Caltech students got it back by having their school President threaten legal action. In another prank, Mudd students made a slight modification to a freeway sign indicating "California Institute of Technology / Pasadena City College / Next Exit". Their prank was quite subtle: they put parentheses around "Pasadena City College".