Something I started doing at work is periodically is filling a coffee cup about 3/4 full of cold coffee and placing it on the second shelf in the kitchen cupboard where coffee cups are kept. Then I put a bunch of the coffee cups on the lowest shelf up with the one with coffee in it so eventually co-workers have to start grabbing cups off of the second shelf. Since everyone here is pretty short, they just grab cups from the second shelf and one unlucky soul ends up dumping 3/4 of a cup all over themself and parts of the kitchen. It has always been pretty hilarious.
