I think you mean "washer" Drake...for the vibration anyway. I'm sure the older the washer the better...but I've never actually tried any kind of sexual thing near/on a washer or dryer for that matter. Ever touch a dryer when it was about half-way through it's cycle? Hot as hell. So, I'm think that maybe the "dryer" could be used for some added warmth...as long as you're careful (don't roast any private bits).
However, I have had some sexual fun in a laundry room.