abusing the ebrake

Hey guyz i have a rav4 (http://www.clublexus.com/forums/showthread.php?t=223872#) and i like to go offroading in the city =] i find golfcourses go drive around the hills hahha.jk! well if it wasn't locked ;] Well i abuse the ebrake alot but i have a few concerns. Does it do any damage to my car like damaging up the brakes or w/e. My mo:icon16:st worries are fliping over the car cuz its a rav4 and i like to slide around with it =] Well if i don't answer back on this thread im probaly in the hospital somewhere lol.