Creating the illusion

Xing Han was poking Kyle's chest.

"Wow, Kyle," he said as he looked at all the love bites on his body, "That's really a lot. She must have been quite intense."

Kyle coughed a bit, then admitted, "It was a he."

Xing Han's mouth went to an 'O' and started staring back at the lovebites.

"Why is this one darker than this one? Oooo ... how did he manage to get one there?! Oh em gee, Kyle, and this one ... the angle of his head must have been like, gosh," Xing Han was gushing as he rubbed the spots with absolute fascination.

Kyle put his hand on Xing Han's head and pushed him away, saying, "Enough already, Xing Han. Gah, seriously."

"What? It's so interesting!" Xing Han was saying with stars in his eyes, "I didn't think all of this was actually possible."