Classic Practical Jokes and Gags! The Finger Trap is a classic joke and gag. A great way to keep your guests entertained, and also makes a great party favour! 13cm long. Woodchip finger trap. Assorted colours. Surprise your guests with a blast from their past with classic practical jokes and gags. Practical jokes are perfect for entertaining all your party guests. Keep the fun going for hours with classics like the groucho glasses, whoopie cushions, and who can resist a rubber chicken.! Keep the fun going with great party gags and jokes like these.