Too often we forget the small things that make us so happy. Take Fun, Inc., makers of magic tricks and, most importantly, fake vomit. Buy a kid a Wii, he’ll play for a day. Buy a kid fake vomit and he’ll play for a lifetime.
Best of all they describe the process of making said bolus:
The vomitmaster smooths the mixture with the back of the spoon, the way a short-order cook does with pancakes on the griddle. Depending on weather, season and humidity, the pools of fake vomit, 500 to a batch, take overnight to a day and a half to dry. Like snowflakes, no two fake vomits are ever alike, which in the world of manufactured practical jokes is a rare trait.
Chicago Tribune via BB