One of my cousins used to let me do this to him as much as I wanted pretending to be asleep. Didn't even care if anyone saw which got a lot of my friends to let me swallow loads from them
– Fuck dude, you sucking my cock feels so good. You’re really good at that. – Yeah, same. You are too. And I really like sucking you. – Me too. You’ve got a great cock to suck. Let’s see who can last the longest before he cums. – You’re on, dude!
On the other hand, I knew a guy who came out when he was older and admitted to me that when we were in school he had friends sleepover and one would pretend to be asleep while the other played with and sucked his cock. (Most of them are married now!) Unfortunately, we weren’t friends then. I knew another guy who did the sane thing except nobody pretended to be asleep. They just enjoyed themselves.