The Yukky Oreo Prank

- Some Oreo biscuits (or similar - any 'sandwich biscuit' will do)

- Something to scrape out thebiscuit filling

- Toothpaste, or squeezy cheese (or anything else you wouldn't want in a biscuit - yuk!)

Twist the two sides to open the biscuit (be careful...they break easily!)

Scrape out the filling 

Squeeze a big dollop of toothpaste (or squeezy cheese) onto one of the sides

Replace the other side of the biscuit, squeezing it all back together

...and repeat! Once you've pranked all the biscuits, get ready to hand them out to some unsuspecting victims!