When my son was just a couple months old I was still suffering pretty heavily from sleep deprivation. I don't think that really passed until he was a year or so old. Here's some fun ones:

• accidentally put his diaper on backwards a handful of times.. Which always led to pee everywhere, or worse.
• dumped a couple scoops of baby formula into my coffee instead of sugar, a few times
• caught a diaper blowout of baby poo with my bare hands because I couldn't react fast enough to grab a baby wipe instead (in my defense, I had just laundered the bed but he was sitting on it with me and my immediate thought was just "OH god not again")