Tell me about mistakes you've made while playing The Sims 3

I learned about puddles and fixing broken electronics the hard way. :(

And this isn't exactly related to the game, but one of my main families back in early 2012 was this super-rich family headed by Declan...the matriarch? It took me until I was done with high school and also well-attached to that household to learn that Declan is actually a man's name.