i.t. ♪ ♪ ♪ ♪ ba da ba ba ba ♪ >> looks like christian's old phone. >> that thing went through some war, approaching the most famous day in april. my birthday, april 2nd. >> what roman is doing here is giving us relative simple and what easy pranks you can play on your unsuspecting victims. first up, if you have quick-drying nail polish. pour a small amount onto foil and use a hair dryer to help it dry quickly. then it's pretty solid. cut around it. place it on someone's favorite shirt. >> no! >> it's brilliant. >> that's terrible! >>> find a bar of soap and cover it also with nail polish. this time around use clear nail polish. once that's dried, it's now created a barrier around the soap. so the next day when someone gets into the shower, the soap does nothing. >> that is so cold. i'm about to tweet to a girl right now. >>> the last one, all it takes it is drinking straw. unplug a monitor from the wall. you chop off a little bit of the straw and jam it in either the left or right-hand side of the plug so you can plug it back in but the connection is no longer being made. you wait until