ERECTION DEFINITION LONGEST PENIS BECOMES THICKER WARMER
EREVTION MECHANISM FILLING THE CORPORA CAVERNOSA WITH BLOOD/ORIGINATOR BLOOD PENILE ARTERIES THAT SUPPRLIES BLOOD TO THE CORPUS
ERECTION [WHICH STIMULI CHALLENGE] [1] FYLOGENI STIMULUS [OPTICAL ACOUSTIC ISMIKES IMAGINARY EROTIC PERFORMANCES] [2] STIMULUS PENIS [REGARDS FRICTION GLANS]