"You CAN"T go out wearing that!" Kris complained, glaring at his brother's incredibly revealing outfit. "It's like you're wearing nothing at all! I can see your nipples through the bra!"

Martin giggled, squeezing his breasts in his hands. For an outing to the park the thin bra, g-string panties and light jacket left very little to the imagination. "C'mon, you already punished me enough by putting me in this body, the least you can do is let me wear whatever I want. Besides, I'm not leaving unless you let me."

As Kris tried his best to ignore the erection hardening in his pants, he rubbed his temples. He had organized for Ashley and Martin to meet at the park to swap back, but the latter was being uncooperative. With a sigh, he grabbed his keys and the medallion and headed for the door. "Fine. It won't be much longer anyway. Let's go."

Arriving at the park in the designated location, they waited for a while but Ashley was a no-show. Kris was worried about running of time, hopeful that Ashley was stuck somewhere in traffic, but Martin seemed unusually cheery. "I know you're trying to get us to swap bodies back, but I don't get why you don't want me to be your girlfriend when you know I give way better blowjobs than her." Kris gasped as Martin gave him a knowing wink. "Yeah, I knew you were awake. But I have one more request before you change us back... I want you to fuck me. Right here."

Kris was gobsmacked. "You can't be serious. No chance!" he stuttered, but the still-hard erection in his pants said otherwise. Well, I want to make sure he goes along with the plan as promised... he rationalized in his head as Martin sat in his lap, his thick, curvy ass grinding into his little brother's cock. With an unbuckling of the belt and the panties shifted to the side there wasn't enough time for Kris to protest any longer, and within seconds without pushing back his dick was buried within his brother's tight, moist pussy.

What followed was an endless stream of wild, lustful sensations as Martin took the lead bounced up and down on his partner's dick, milking his cock for all it was worth as they both choked back their moans for fear of being caught in public. Just the sensation of those thick asscheeks clapping against his thighs was enough to drive Kris into a sex-obsessed frenzy. Not that it mattered, though - the couple were already getting strange and disgusted looks from strangers passing by which made them both even more aroused. The fucking was so incredible that Kris lost track of time, and before he knew it the sun had already begun to set as he emptied his sixth load into Ashley's body that day. Still recovering from the best sex he'd ever had, Kris (still deep within Martin's vagina) opened his phone and noticed several missed calls from Ashley saying that she couldn't find him. Checking the time, he realized it was too late - the swap was done for good.

"Oh, that?" Martin teased, "I might have borrowed your phone earlier and given you the wrong park address. So now it's permanent!" Kris was horrified - he couldn't believe that he'd just fucked his own brother, and that they were boyfriend and girlfriend now! And worst of all, it still felt better than anything Ashley had ever been able to do for him... "C'mon bro, let's head home." said Martin as he got to his feet, not worrying about the cum leaking down his thighs. "I'm hungry for dinner. And maybe after we've eaten you can give me a little dessert..." with a wink, Martin turned back to the car and Kris pulled his pants back up, already knowing that he wouldn't be able to resist that body if he tried again.