After a night at Promise we all went back to someone's house. Then one of my mates dressed up in this granny outfit (it looked scarily realistic!) went out the back of the house and round to the front. He then knocked on the door pretending to be complaining about the noise. Three of us answered the door, 2 including me knew what was going on,the other had no idea. The 2 of us who knew then pushed the 'granny' to the ground and gave 'her' loads of abuse,then slammed the door shut. The look on the other lads face was priceless. He basically thought we'd just chinned a granny! Took him a while to realise what was going on! you can't beat a good practical joke!