Krypto said to Kevin. "Oh no here is my erection!" And Kevin felt Krypto's dick grow from 8 inches to 12 to 14 to 16 to 18 to 20 to 22 to 24 then finally 26 inches. And Krypto knew his knot was going to pop out and said to Kevin. "Here's my knot and precumming!" And Kevin said. "No Krypto not the knot!" And Krypto replied. "Sorry, but here it is and I'm precumming." And Krypto pushed his knotted ball sack out and kevin felt them become large instead of medium balls, and felt a bunch of salty and sweet flavorful precum go into his mouth, and he didn't like that and Krypto's knot went back into his sheath and he said to Kevin. "On all fours ass up into the air for me." And Kevin said to Krypto. "No, I won't do it!" And Krypto pushed him flat on the bed and ass up,and sucked 1 finger and put it into Kevin's ass and did a circular motion then sucked another finger then started scissoring him and added another finger started to circling the outer part of Kevin's asshole, and added the last finger and goes the other direction and finally removes his paw from Kevin's butthole and said to Kevin with an erected member but sheathed knot. "You're being very bad right now so you will lose your virginity to me right now!" And Kevin said to Krypto. "No don't do it and I'm sorry!" But krypto moved Kevin arms towards the closet handle and tied them from a rope he found in Kevin's drawer and turn Kevin on his stomach and used his paws to move Kevin legs to move them apart after cutting the rope's 10 inches off Kevin's tied hands and ties Kevin legs so they couldn't move apart. And Krypto said to Kevin. "This is your punishment and my Knot and my Member will enter you in 10,9,8,7,6,5," And Kevin tried clenching his butthole so Krypto couldn't enter him but didn't clench hard enough, and Krypto finishes his counting "4,3,2, and" Kevin said to Krypto. "I'm sorry Krypto don't do this and I love you!" And Krypto said to Kevin. "Sorry but your apology won't cut it and I love you more than just my boy and 1!" Krypto Started shoving in his big head of his member into Kevin's butthole entrance and Kevin feels it poke his entrance and starts to cry as his dog's member enters him slowly and he knows his virginity is taken away and says. "Ow this hurts." And Krypto said to Kevin. "This is just the first part of your virginity taken away and my dick won't be exiting out I love your tight little asshole and you walls are tight but that will change in a couple of seconds because my head of my dick will be pushed till I find your G spot and you will feel my dick's knot pushing against your butthole's entrance and with a loud pop it will be forcefully pounded into your ass! Oh i feel my head's dick finally pushing itself in." And Krypto is right Kevin feel's his dog's member head go in with a pop and Krypto said to Kevin. "Your butthole will be punished for telling me earlier no I won't do it and I will be using my dick strength in each thrust and you will feel pain and your balls will fwap with mine till I finally make my last fast thrusts in and after three hard thrusts pop my Knot will be inside your asshole!" And Kevin said "I'm so sorry Krypto and I love you!" And with his last words before he started Kevin's punishment. "I love you more than my boy, but my dick is ready to be fully inside you and I can't accept your apology and stop now. Goodbye Kevin's virginity hello my new found cum hole!" And starts thrusting into Kevin's virgin asshole1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,32,33,34,35,36,37,38,39,and finally after 40 thrusts he felt his knot pushed out of his sheath and said to Kevin. "Here's my knot pushing against your anus in three big thrusts it will be knotted and it can fit firmly in your tight little asshole!" And Kevin pleaded to Krypto. "Don't do this to me!" And Krypto said to him. "Sorry but your asshole I can feel you clenched onto my member so my Thrusts will be done and I love you more than just my boy!" 1,2, and 3 fwaps and thrusts he hears his dick's knot pushing in so he says "Ruff ruff super thrust!" And with that one super thrust and pop goes in the tight little asshole of Kevin and floods the insides of Kevin with three gallons of Semen hit Kevin's inner walls it tightens the hole tighter against Krypto's knot and he cried as his butthole was fully filled with Krypto's cum.