Can you show me how

Mike was sitting at his computer desk surfing the internet for porn. He had a powerful hard-on that he wanted to get rid of it. He came across a video of two women making out and fingering each other. He unzipped his pants and up popped his 7” erection onto his stomach through his boxers
He started stroking himself with his right hand and rubbed his chest with his left.
“Ugh,” he panted as he started to stroke faster and faster. He pulled off his shirt really fast revealing tight pecs and cut abs.
“Ugh,” he panted as he could feel himself getting close to cumming. His body started to lose energy and he felt his legs going weak. He shot out a huge wad of cum onto his chest and the next shot hit his stomach. The rest dribbled down the side of his cock and into his pubic hair.
“Wow,” said someone under their breath.
Mike turned around and was shocked to see his little brother Tony standing in the door way staring at him.
Tony was an 11 year old counterpart of his older brother. He had short black hair and brown eyes. He had tan skin and was about 4’9” and very skinny. Mike also had short black hair and brown eyes but was more than a foot taller than Tony standing at 5’11”. He also had a muscular body from his years of being on swim team.
“What are you doing?” said Mike with a hint of anger in his voice.
“I’m sorry,” said Tony, walking into the room and closing the door behind him, “but I heard you panting and wanted to see what was going on.”
“Oh,” said Mike. “Well, next time knock before looking in on someone.”
“Ok,” said Tony, happy that his brother wasn’t mad.