the manager made me stay late and clean up, so i left a grumpy in his desk drawer (or the sink, or the coffee maker, or the printer, etc
a turd left for someone else to find, either in an unflushed toilet or in a more creative location
"the manager made me stay late and clean up, so i left a grumpy in his desk drawer (or the sink, or the coffee maker, or the printer, etc" What is the definition of "grumpy"?