The atmosphere suddenly rippled with static electricity the muscular boys were clad in nothing but snug leather speedos. Ten year old Evan looked over at Cole " holy crap Cole what are yoU WeARING?!" His voice cracking becoming a mature female voice Cole grunting "arg-UNNO" his voice becoming a booming baritone. Tom knew something was off and ran upstairs to see his computer glitching with a blue screen remembering that he downloaded some questionable porn earlier.
. running down he could see two bulky muscular 18 year olds were writhing in place of the brothers their small erections ejaculating repeatedly dripping semen from their strained speedos.
Evan's muscle mass had distributed to his thighs looking like they had the muscle mass of a female bodybuilder with an impossibly massive rounded heart shaped ass. His pecs inflated causing Evan to make girlish moans surging forward like balloons becoming a perky j cup his scruffy hair lengthened becoming a toasted blonde that reached her/his badonkadonk his boyish face long gone with a feminine profile with luscious lips .
Cole on the other hand had bulked bigger than before and grew a dense amount of pubic hair over his torso looking like a heavyweight bodybuilder a thick beard ecapulated his mature face. Suddenly another change caused Cole's genitals to shrink making slurping noises with a final pop and only Evan remained erect. Evan's ten year old boy cock surged to pornstar proportions becoming a fat smooth 11" dick with tennis ball testicles emptying 3 quarts of pearly white cum.