Dan

verb. to Dan someone. i.e to cut off the tip of someone's dick, giving the impression that they have a smaller penis than before. This is done to imitate the Dan, also known as the man with a 0.5mm penis

Jake: Dude, Alexander pissed me off, so I just Dan'd him
Carl: LOOOOOOOOOOOOL
Alexander: *Screaming* I BECAME DAN! NOOOOOOOOOOOOOOOOOOOOO