Here's a maddening one. When I play a restaurant, the sims tend to walk around, talk to others, stay HOURS somewhere other than their table. Meanwhile the food arrives and gets cold. BUT don't let the sim wait a second too long for their order when they actually decided to just sit down at the table (like a normal person would do in a restaurant). What happens? They get up and find the outdoor trashcan so they can kick it. All of my restaurants have the eco trashcan (that gives money) now... I have to admit, the look on their faces when they kick the trashcan is priceless though xD