Me and my partner were thinking of adding some tempature to our oral sex, we were thinking ice or cold water but would the tempature make any difference to the feeling of oral?
Oh yes. My wife and I have done this several times, using a cube of ice. What's better is when you can alternate warm and cold.
Just in case you're not a one post troll, I'll share that my girlfriend will sometimes put just a little of the green/blue gel toothpaste that we use into her mouth before sucking my cock and balls. It's a VERY interesting twist on what's already a dam good trick.
I cool mouth feels great (not too cold though) but t doesn't last long unless you keep a cup of ice or cold water close by.