I was out vacationing with a with a good friend of mine... we were at a beachside resort. We had a room together, trying to save money. He got so drunk he couldn't stand up anymore and I literally half carried him back to the hotel. He went totally limp by the time we got to the room and I had to drag him the rest of the way. He was totally passed out at that point. He's not my type per se, but I couldn't pass up the opportunity, and I undressed him and played with him. I have a big foot fetish, so I played with his feet, licked his toes, massaged them. His size 12's didn't move at all. Then I slapped his face around and he barely moved. So I licked his face. His whole face. The domination aspect turned me on and I jacked off with his hand. He was so limp the whole time and I had a great time exploring his body.
So I suppose I never drugged him, but I did buy him a lot of drinks. So in a way maybe I did
He has no recollection of even getting back to the hotel, so I never bothered telling him what I did to him. Who knows, maybe he'd like it and want to do it again??