Interrupted by Seb

"Hey man, you want some help with that big dick?" Asked a familiar voice.

Ben felt himself start with embarrassment at being caught jerking off by Seb, but at this point he was too horny to care. Keeping his eyes closed and his warm, slick hands on his cock, Ben just grunted in response.

Taking this as an affirmative, a naked Seb stepped into the shower to join him. Coming up behind Ben this time, Seb took a few steady pumps of bodywash and made his hands slick with the soapy goo.

Seb stepped in close to Ben, wrapping his arms around him and grabbing onto his big cock with both hands.

"Damn man, your cock is huge right now! Couple more inches and you'll almost be as impressive as my huge cock" Seb joked, wiggling his hips and smacking his huge cock into Ben.

Ben grunted in annoyance, thrusting his hips forward and fucking his incessant cock into Seb's soft, soapy hands. Seb lifted one hand away for a moment, using it to adjust his own colossal dong to be sandwiched in-between the two boys, his thick dickmeat wedged between the cheeks of Ben's ass and extending all the way up past Seb's abs and Ben's smaller back.

Ben wasn't happy having Seb's huge cock so close to his virgin hole, but Seb's expert hands returned to his cock and Ben loudly moaned in pleasure as the action resumed.

"Fuck man don't stop, I'm close" Ben groaned at him.

Ben couldn't believe how good Seb was with his hands. His grip was the perfect balance of soft but tight, and the way he squeezed Ben's cock made him feel like he was actually fucking a warm hole instead of his cousin's hands.

Seb was using a rocking motion as he jerked Ben off. It added to the stimulation for Ben, although Ben uncomfortably noticed that it also fucked Seb's huge cock in-between them.

"Oh fuck Seb don't stop, I- oh fuck I'm gonna cum" Ben groaned, feeling his cock shudder and his swinging balls pull up tight.

Ben barely stifled a shout as his cock exploded in another huge orgasm. His cock sprayed cum high into the air, splattering against the wall of the shower and backfiring on Ben's own torso.

Ben's groaning continued as Seb's rocking motion continued. Seb kept milking Ben's huge cock in a frenzy as he aggressively bucked his own hips, Seb's huge cock fucking the warm soapy tunnel created between the two boys.

"Seb, I don't-" Ben moaned in anticipation, but it was too late.

"Oh fuck Ben! Fuck! Fuck!" Seb panted as his own huge cock started to squirt in-between them. Seb pounded his hips forward, banging his cock against Ben's ass as his cock unloaded its huge load all over Ben's back.

Shaking Seb off, Ben groaned in a combo of arousal and frustration at his cousin's antics.

"Goddamnit Seb, you know I'm not into your gay shit" Ben muttered, in spite of his huge cock continuing to throb and spit cum in-between them.

"Whatever man" jabbed back, trying to catch his breath as his right hand steadily milked the rest of his load onto the floor, "I didn't hear you complaining when I was jerking you-"

"Boys?! Are you coming out to join us for a swim?" Called out aunt Rian's voice from the stairway.

"Fuck!" Ben yelped softly, quickly rinsing off the rest of Seb's warm cum and dashing back into his room, furiously pulling on his swim shorts.

Watching Ben panic try to furiously stuff his massive meat down the leg of his shorts, Seb chuckled to himself as he released his drained cock and enjoyed the warm spray of the shower.

"I bet I can fuck one of his holes before I'm done" Seb muttered, closing his eyes and setting in for one more round of jerking off before he headed out for a swim.