Make plans to go out together again, to the bar or something, and let him drink while you're out having fun. Let him get good and buzzed.
Don't let him get so drunk that he's going to pass out on you as soon as he hits the bed, just let him drink enough to be feeling good and relaxed.
After a couple hours, just casually say you think he's had enough and take him back to your place, but make sure no one else is going to be there.
When you get there, get him another drink and then take him to the bedroom. Tell him he can kick back on the bed if he wants, and nudge him in that direction while you pull his shirt-tails out of his pants. If he's been drinking, he won't refuse kicking back on the bed, then pull off his shoes, if he hasn't done that himself already. Put on some music, not too loud though.
Here's where your big move comes in.
Casually make the comment that you need to take a shower, maybe you smell like smoke from the bar or something, doesn't matter.
Then just strip.
Don't strip like you are putting on a show for him. Just strip like you would if no one was in the room. Sit on the bed and pull off your shoes and socks. Stand up and drop your jeans then pull off your shirt. Then the moment of truth, drop your boxers and toss them somewhere. Don't look at him, don't act as if you are trying to get him to notice you, just act casual as if to let him know you aren't shy about him seeing your naked body.
Kill a little time before you actually go to the shower. Dig through your dresser drawers, rummage around in the closet, tidy up the dirty clothes that have collected on the floor, anything that will let him see you for a couple minutes.
Go to the shower, but don't rush. Maybe at this point he might decide to strip down and climb in the shower with you.
If he hasn't made an appearance after 10 minutes then just finish up, dry off and go back into the bedroom. If he didn't join you in the shower then he'll still be on the bed.
Turn off the lights and lay down on the bed beside him.
At this point, he's either interested and something will start happening between you two or nothing will happen, which you can conclude it's because he's either too drunk and fell asleep or he's not that curious.
Either way, stripping in front of him and letting him know you don't mind him seeing you naked should provoke some kind of reaction.
Good luck, and post something to let us know what happened.