Or, you can pretend you are in bed with a professional boxer.  He wears his mouthguard proudly!  He just knocked his opponent out!  He is a champion!  You might want to play “We are the champions of the world” by Queen to add to the victorious mood.  After all, your husband IS 75 and so what if his is not a mouthguard but a snore guard?  When you are fantasizing, do you care about the details?