I have a gay friend with whom I was just hanging out at his house drinking beers and watching tv a few years ago. I was complaining about how long it had been since I got sucked.
And he said, "Well, if a blowjob's all you want, I'd like to help!" And he scooted next to me, opened my belt ad unbuttoned my jeans, fished my cock out of my boxers, and proceeded to give me just about the best blowjob I've ever had. I lasted maybe 30 seconds before I show big gobs of sperm in his mouth. He kept my cock in his mouth as my cock softened, then stuffed it back in my boxers, and buttoned up my jeans.
"Well, thanks, Mark," I told him (That's not his real name, BTW...). "Can I return the favor?" "Oh, no, not necessary...I just really wanted to suck your cock..."