Cliff-Hanger
"What are you doing at the edge of that cliff?" Severus asked, casting a Cushioning Charm on Harry's bum, just to be on the safe side. One never knew with Harry. (And it was a delectable bum, wasn't it?)
"There!" Harry pointed at the sky where a dark figure circled the tree tops, soaring through the air with its wings spread wide, breathing fire at noisy birds. The air was hot, the leaves motionless. The crashing of the waves on the bottom of the cliff were the only sounds once the birds were gone.
Severus observed the beast. The mating dance of the dragon was a rare and spectacular sight. With every movement, with every twist and turn of its slender body it called for its lover. Severus could feel its longing, its burning desire, and as if in trance, he moved closer to Harry. The boy-no-more dared a smile. Severus was just about to give those impudent lips the treatment they deserved when a blasting roar disturbed the silence.
A smaller dragon (with scales the colour of Harry's eyes) came from the sea to meet its lover. The black dragon (most definitely male with a huge red prick to prove it) lunged at his mate. A deep growl shook the ground, and Severus steadied Harry. (Harry's bum was just as delectable to the touch as it was to the eyes.)
Up in the sky, the dance became more and more heated. Severus fumbled for his wand to cast a Shield Charm against the dragon-fire when a sudden rain of semen proofed that after all, the green dragon was male, too. Harry jumped out of the way (stupid boy, didn't he know what a valuable aphrodisiac dragon sperm was?), slipped in a puddle and fell on his arse. The Cushioning Charm made him bounce twice, three times, before he sailed over the edge of the cliff.
Harry's hands were white against the dark stone of the cliff top. The semen on the tip of Severus's nose tasted like salt and fire. For the first time in his life thankful for something the Dark Lord had taught him, Severus took off from the ground, a raging hard-on between his legs.