I lost my Dad almost ten years ago and he had dementia. I recall taking him to the actual assessment some years previously and was really alarmed at his lewd answers to some very ordinary routine questions set by the Dementia clinic nurse. She was very understanding and could see that I was quite upset at the changes in my Dad.
As his dementia progressed Dad became even more vocal and aggressive, both verbally and physically.
Sending my warm wishes and support to all those supporting someone with dementia - stay strong, all of you. 
It is a disgusting, vile disease
++Grandson of New Limerick (Son of New Limerick cont)
) I was a bit sad to realise that a lot of her conversation topics revolve arond men (previous boyfriends & current friends) & what she wants them to do to her. Not at all like she was - which was a bit straight laced & proper. But still doing fun & silly things with her late husband).