I have a very old mom-in-law who is in assisted living care.  I have always loved her and thought she was really nice looking for an older woman.  (and I think grannies can be HOT)  She has huge tits (DD or bigger when she was young) and now they sag to her waist.  For the past year, she has been going down hill (alzheimers) and rarely wears a bra.  When I visit, I have to be careful to hide my boner.  The last two times I have visited her by myself and she has thought that I was her boyfriend.  At first, I tried to correct her, but then I had a really horny idea and decided to go along with her.  She let me sit next to her and kiss her neck and make out the first time.  The second time, we made out again and I felt her breasts a little.  I didn't try to hide my boner and I saw her looking and she smiled at me and said, "Looks like you are having a good time."  I squeezed a breast, kissed her and told her how hard she was making me.  I would have taken things further, but one of the workers came by to check on her, and I had to leave.  

On my next visit alone, I plan to take things a lot further.  I would love to hear what everyone thinks.  Should I continue or just be thankful I got to touch her breasts?