In the 70s my coach had a cock like that and he would invite me to work out with him at the gym after hours and usually part of our work out was myself sucking him hard and getting fucked in the ass. He preferred taking a naked Jacuzzis with me, then bending me over the Jacuzzi he would fuck my ass hard, splashing water all over the place. Sometimes he would turn the temperature down in the sauna under 100° and take me there making me suck him nice and hard then fuck my ass nice and slow, as both of us sweat. I think the muscles in my ass were more sore than the muscles in my arms from lifting weights.