The Application - 1
biceps.
Overprotective Girlfriend
"i didn't have defined biceps until today. what in the world...?" she gasped, quickly dropping the other dumbbell to feel her other bicep. it was just as developed as the one on her right arm, and just as round.
The Temple of Testosterone - 1
The thick veins on his oversized forearm spread to his biceps. sturgis could only watch as 9 inches of bicep muscles suddenly became 15, then 20!
More than a Gift
Once frail looking, small womanly limbs, mei was astonished to find her developing big, round biceps; she couldn't stop herself from closing her hand around the mound, groping the once-inexistent biceps, now hardening cord of muscle. "oh god, my arms!"
Beast Among Beastmen (unfinished)
Much less of it now that he raised his arms and struck a double bicep pose, grunting from the pressure of his skin fighting against such dense muscle underneath. the peak of those biceps grazed his fists, his lats stretching the coat to its limits.
The Adventures of Falcon
His nipples throbbed, getting thicker just before his pecs swole larger, his biceps slowly gaining girth. his stomach defined more, the abs becoming impossible to ignore.
The Secret Admirer [TSR]
Every pump of his arm tensed his biceps as the thrill of sexual euphoria consumed him, though, unnoticed by the reptilian stud, they retained their size at flexion when they were at rest.
(Im)Mobile Gamer
He tried touching it with his free hand, his pecs and biceps clashing together as he managed to get a good grip of his bicep and the bear was awed at how large and hard it is.
Oceanside Muscle (Re-Post)
Squeezing him harder, andy held his erotic biceps flex as he raised his arm, revealing the humid and musky cave jake was lusting for.
Lowell's Cave Adventure.
The intense feeling surged down his body; his arms grew longer and his biceps swelled, his legs grew taller as his thighs thickened, his feet spreading over the ground lengthened.
VigoRx - 3.2 - Baling
The meat of his biceps pops the arm seams, and soon his shoulders threaten to do the same.
Hoard of Big Fluffs 10
His biceps doubled in size, squeezing his head and forearms. "...i've tried to sketch them. i made a few marks in the stone on the other side of the cave. would you like to see what i've observed? you must have seen the same things.