It's interesting what happens in your head when you're left for a while. Once the action of being tied up has passed and you're left alone and you realise you cannot escape your head (well, mine at least) goes into a different place. The initial excitement subsides a bit, but then some fear does creep in, especially if you don't know how long you will be left. And that fear is itself exciting again. Love it!
Thats a long time in bondage terms, that's 2 hours of trying to escape and 2 hours of trying to cum and 2 hours of wishing to be spanked and 2 hours off will she return to release me in fact it,s 2 hours of mind fuck, fear terror