Double Suction Cup by CarnivalSource.com! Apply suction cup to the bottom of a cup and then the other side to a table. When someone tries to pick up the cup they won't be able too. Works best on a smooth, flat surface. Made of plastic. 1 1/2" diameter. Ages 3+Looking for more laughs? With wide selection of jokes, gags and tricks you'll find what you need to play a prank on April Fool's day or any occasion requiring a laugh. Fill party favor loot bags with the classic joke toys and keep your guests laughing. Find more great items like this in our Jokes Tricks and Magic category here at CarnivalSource.com. Double Suction Cup by CarnivalSource.com is the perfect tool for a prank or joke! This 1 1/2" diameter suction cup works best on smooth, flat surfaces such as glass, metal or smooth plastic containers. Simply apply the suction cup to the bottom of a cup and then the other side to a table and watch the laughs ensue! Made of plastic and suitable for ages 3+, this fun gag is sure to bring the laughs. Ships from our Missouri warehouse within one business day, so you can start your pranking quickly! Get your Double Suction Cup here at CarnivalSource.com and find more great jokes and gags in our Jokes, Tricks, and Magic category.