I'm not sure, but I'm guessing it was 6-15. I was at a party where there was a ton of drinking going on and someone jerked off in a cocktail glass as a joke. Before I knew it, they started to pass the glass around and everyone started to blow their loads in it, (including me.) Eventually the inevitable happened and everybody started kidding around about who was going to drink it. Everyone was drunk AF (college party) so we put numbers in a bowl, and I drew the lucky number much to the delight of the crowd. I don't think anyone really expected me to drink it, but I promptly dropped to my knees, and they all gathered around and watched as I slurped their cum cocktail down. It was a lot of jizz, but I got it all down fairly easily except for a little gagging. I didn't leave a drop and licked the glass as clean as I could.
Apparently, it was a good move on my part since it turned a lot of them on so much that I spent the rest of the party on the host's bed getting my asshole split in two by most everyone there who could manage again or hadn't passed out, including the host.
I would have loved to repeat that experience, but it just never worked out again. I have had more than a few times of a dude willing to jerk off in a glass or on strawberries or chocolate for me to eat at parties, but... not the same.
Unfortunately, this was long before cell phones. I would love to have pictures.