Have kids, they said. It will be fun, they said. Sure, it's all fun and games until your kid smears poop all over the wall. Or they're screaming bloody murder because you cut their sandwich into a square shape instead of a triangle, you monster! But, through all the trials and tribulations that parenting brings, you've got to be able to laugh your frustrations away, and the parents of Twitter certainly do an excellent job at it. Here is this week's collection of funniest parenting Tweets for all parents (and non-parents alike) to relate hard to.