Take a fully-loaded disposable nappy from a well-fed baby. Wrap it around itself and seal with the little velcro bits.
If you’re feeling slightly less of a risk-taker, place it in a small plastic bag and tie this shut.
Locate yourself round the corner from your other half.
When they are unsuspecting, launch the package into their vicinity with a shout of “GRENADE!!!”
Household japes #238 by Mosher'sUnimaginativelyEntitledBlog, unless otherwise expressly stated, is licensed under a Creative Commons Attribution-Noncommercial-No Derivative Works 3.0 Unported License.