Summary

Mentos Drop Tube.

This screw fit Mentos Drop Tube screws to any standard coke, lemonade (or other) bottle and has a pin which you push in the side of the tube.

Screw the Mentos Drop Tube onto the drinks bottle, push in the safety pin, load the mentos, stand back and pull the safety pin out to watch the coke erupt!

The bottle screw used was from thing:2167007.

Awesome childish fun!