Lies, Lies and D*&N Lies
Just look at some inappropriate pictures, enjoy yourself.  You aren't hurting anybody.  Nobody will know.  You will feel so much better.  Everybody else is doing the same thing. Just this one time. Just a little peek won't hurt.  You wouldn't have been given such a desire if you weren't allowed to fulfill it.  Go ahead, you have earned it.  You have been so good for so long, so enjoy.  Are you sure your computer is really safe? You better check to be sure.  See if they have patched that weakness you found before.  This will probably be the last chance you will ever have to see...  I wonder if I can sneak anything inappropriate past my filter.  What if I try this?  None of this will have a lasting effect on me, my wife, our family.  If it was really so bad, how is it possible that I have been doing this for so long without any ill effects?  Isn't it natural?
Please feel free to add more. This is just a sampling from (not)our friend, the yetzer hara
Grateful for another sober day, Kol Tuv
PS he is not our friend when we fail, but definitely our friend when we succeed. (hamevin, yavin)