So a dude walks into a brothel. He goes up to the counter and speaks to the woman running it:
"Im looking for something a little different..." he says "...what would you reccomend?"
The woman looks the man up and down for a moment, and gives her husky reply:
"Well darlin', on special this week is the 'Singing Blowjob' for $50."
"What the hell is a singing blowjob?" The guy asks.
"Well, you'll have to see for yourself, hun." She winks at him.
The guy considers it for a moment, and finally slaps the cash down on the table. The woman motions for him to go through a door on the right.
In the next room is a chair, a table, and a curtain at the far side of the room. Just as he's about to sit in the chair he hears a voice from behind the curtain telling him to turn the light off. He flicks the switch next to the door and sits down.
Sure enough, the mysterious girl starts to give him the most fantastic blowjob he's ever had, and the most amazing part is when, halfway through, the girl begins singing the most amazing opera he's ever heard!
Well, he finishes up and leaves brothel.
That night in his local bar, he's relating the story to his friends when one of them calls bullshit:
"No way dude, it must have been a recording or another girl or something! You're gonna have to find out!"
So the guy goes back there the next day, walks in and asks for another singing blowjob. He goes into the room, turns the light off, and the girl starts going at it again.
When she starts singing the guy feels around her with his hands, and - nope. Theres no recorder, and the singing is definitely coming from her and not another girl or he'd have felt her down there too.
That night back in the bar, his friends come up with a plan to solve the mystery once and for all:
"Dude, when she's finished, just turn the light on quickely and BOOM!"
So, the next day he goes back a third time. Slaps his $50 down on the counter, and gets another singing blowjob.
True to form, its another blinder of a suckfest - with even more of that serene singing as an accompaniment. So good was this third blowjob the guy almost forgets the plan. But, not one to lose a bet, just as he comes he leaps over to the door, flicks the switch...
...and sees the glass eye on the table.