He didn't have to wait long.
With a growl, Batman was up and quite literally THREW the Joker on the bed where he just was. As usual, Joker didn't mind one bit. Maybe that's why this is so intoxicating, thought Bruce. I can be as rough as I want to be and he'll still want it. He's not like those fragile girls I've had in the past who would have cried and run off if I threw them around like this.
Another growl escaped his throat and he was on the Joker, kissing him hard and rubbing their bodies together until he was hard again too. The Joker was in no shape for this, however. Precum had already began to seep out of the opening of his cock.
Batman quickly coated his member with it and spread Joker's legs, listening to the desperate gasps for breath the Joker was already pushing from his lips. Batman was smug. Who knew a lowly crimefighter like me could make the JOKER a heap of sweat, cum, and skin. And very nice skin it was, too. It was pale and slightly scrawny, but if you looked close enough, you could make out the thin muscles under the smooth arms and chest.
Batman growled again. He did that a lot.
He bent to devour every inch of skin he could find, distracted for now from his former task. Joker jutted his dick to emphasize the need for Batman inside of him. So, Batman obliged. He stopped as Joker hissed in pain, waiting for the go-ahead. It came in a nod. Batman quickly began thrusting in and out of Joker's tight ass, both moaning with happiness. Batman went back to trying to lick every section of exposed skin on the other man. But as he went in for the pulse point on Joker's neck, he accidently shoved one of the spikes on his mask into Joker's chin.
"OW FUCKING OW!" yelped Joker pushing Batman up and putting his hand on the bleeding hole.
"Let me see." Batman commanded. Joker moved his hand. "It's very small you baby. Only about a quarter inch deep. I apologyze."
"Don't APOLOGYZE! Just take off the BLASTED mask!!" Joker exclaimed irritably.
Batman thought for half a second then unzipped his mask. He had his eyes closed waiting for the realization, the gasp, the shock...but was met with silence instead.
A hand cupped his cheek, making his eyes flutter open.
"You're an idiot. I pretty much already knew. Why do you think we're here, in YOUR bedroom? Do you think I'd have sex with you on a stranger's bed?" He gave an inhale of breath in mock surprise. "Not ME monsieur." he said in a girlish voice.
"So who are YOU, Joker? Now that you know me for sure, it's only fair that I kn...." His inquiry was met by a shush and Joker's finger on his lips. Then the finger was replaced by Joker's own lips.
"Talk..." kiss "...later..." kiss "...fuck..." kiss "NOW!" then they were making out again, the Joker running his hands all over Bruce Wayne's face as the waves of pleasure engulfed them both.