A small but reliable tool best known as the "Cannon". This product, in particular, is a mystery to us as we don't fully understand how to use it. However, it comes with a bottom that can easily be screwed off.
Additionally, substances can be placed at the top to help develop the sensation to fit your demands. Let us know how you think "The Cannon" works in the review below, and you could be in for a chance to win a coupon.