Nothing, but once i used face cream, and another time i used sun flower oil lol. I only did it to see if it made a difference, i didnt like it so i havnt used anything since.
I sometimes use lube,I have a few different kinds,sometimes nothing and sometimes saliva!It all depends!
Just plain old hand does it for me, sometimes cum from previous masturbation if I go again straight after
Of course! That is if the wife doesn't get to it first. Her favorite is a bagel in the morning, toasted with butter and my special topping.