I would assess if he's a loner, or doesn't mind company. Either stop by to say hello, or find a reason to talk to him, find out his interests. If you get to hang out find out his sense of humor, maybe tell him a couple dirty jokes, see how he reacts. By now I'd think you'd have figured out if he's going to kick your ass or not...lol. Some how get to talking about porn or something, naughty, if he bites, ask him what he likes as far as porn recommendations. See if he wants to watch some with you. I don't know your location, but if I did any of this in my small town, I'd be openly ridiculed, but if you're both away from family, friends, then the risk is not as great as asking your neighbor to suck his cock, and he tells half the town. If we were both detached from the area, you could mive so much faster. That's just how I would.I have a neighbor who lives alone and never had any kind partners that I know of and I bet he could use a blowjob bad. I have a feeling if I approached him he might go for it but I'm just too nervous to cross that line. Any pointers?