Cockroaches are gross, but a Fake Jumbo Cockroach is REALLY gross. Leave these fake cockroaches scattered around the office or your friend's house and they'll definitely elevate the creepy factor. Maybe you had terrible service at a restaurant, so innocently drop a few of these around the establishment. That'll teach them to be so rude! There are so many possibilities for this giant cockroach gag and so many people to prank.