From a published short story with vigorous use of adjectives. I think I'll keep the list handy. (And, for what it's worth, the author repeated only two or three and those only two or three times.)
rigid
burning
raging
long
wet
growing
naked
lush
hard
spuming
slumbering
rich
fat head
beefy
naked
big hard
inflamed
throbbing
aching
eager
stiff
throbbing
dripping
oozing head
strutting
pulsing
enormous
hard driving
hardest vibrant
smooth
flushed
hairless
bald
open
aching
pampered
alluring
wet
frothing
sweet
clasping
flesh-filled
frothing hot
swollen