Me and my mate were on our way to a party so we stopped to get some food....we were driving my car (st-162) which has central locking and immobilizer so we jump out lock the car up by food come back unlock jump in and my car wont start. luckily his dad was also at the shop, and having a dickey battery I immediately blamed the battery so we bugger around with the battery for about half an hour and still no start....try a push start and no go so I call up RAC roadside for a jumpstart......we sat around for half an hour waiting for the dood from RAC and my mate decided to filk the door lock and both doors locked.....I looked over at him and said "oh fuck" pressed the unlock button on my beeper and tried to start the car and what do u know it started....the immobilizer had been on the whole time.