A urinating guiding accessory (10), including: a projector (24), being disposed on a rear (64) top (66) of a toilet bowl (12), and directed towards a front internal wall (60) of the bowl (12), for projecting a guiding picture (14) onto the front internal wall (60) of the bowl (12); and a sensor (20), being disposed on the rear top of the toilet bowl (12) and directed outwards back (70) the toilet bowl (12) towards the user (50), for sensing the user's position, for controlling the guiding picture (14) accordingly.