What are some of your deepest space man regrets/mistakes?

[Haprenti]

Being a dick when in a hurry trying to do something that takes time and I get interrupted a few times by someone trying to innocently mess with me. I always regret my "Piss off!", because even if they're annoying me at that moment I now they don't mean to annoy me as much as I actually get annoyed. But sometimes not having enough time can mean "Well that's another 50min down the drain".