So, my grandma has this friend of hers and she is this beautiful older woman who I am EXTREMELY attracted to. She only comes like once a year down to where I live and she is coming down on July 2nd. I have a plan to let her "catch" me jerking off at night while my grandma is sleeping. I tried it last year, but I wussed out when she came out of her room for water. The problem is that I need some sort of excuse to be at my grandma's house for at least one night and I can't think of any real good reason to do as such. They both are quite old, so I might be able to get away with "helping them out", but other than that, I am stumped. Has anyone had any experience with anything like this and can help me?