My Dom can be strict about things. However, he too has a problem with following through on things. He also has a problem with consistency as well. I have gotten used to him not following through and it began to lead both him and I to be lax about things. Well once we lost D/s and didn't have that relationship as much, it led him to re-evaluate a lot of things, especially what was important to him.
So he came back renewed and wanting to be more serious about things. A week later I did something not to wonderful and he gave me a punishment. Normally it would involve pain, but that tends to turn me on, so not this time. I was told to write a phrase 2000 times. This was not my idea of excitement and was actually a punishment i was dreading. so I wrote about 1930 phrases and then stopped. He hadn't mentioned it in awhile and I figured, as always, he'd forgotten.
whoops. 3 weeks later he asked me where his envelope was, with his sentences. When I explain he was less than happy. So now I am to do 2500 and until they're in his hand I cannot refer to him as anything but Sir (I have a lot of pet names for him I like).
Now granted, not everyone can send their Dom off to the sandbox in Iraq for them to realize what they're missing and took for granted ... but for us, that was what it took.