My wife has recently started telling me that I operate under "Cake Time" where I never allocate enough time to do something with the cake and we end up having to leave later than she wants.
So now if we need to leave at 6:30 she will say thats 6:45 Cake Time
That applies to my whole life.
I work a different boring job during the day so the only time I can do cakes is in the evening. I always say "ok I'll just play with cake until 10pm then I'll go to bed". But I always go past that, then I forget clean-up time. That's at least another 30 min.
When my husband is fixing something around the house, I always double his time estimate. It's saved me a lot of aggravation.