Simultaneously, swift contraction of muscles at the base in the penis, referred to as periurethral muscles, propel semen out of the penis."Pov: udah sadar dari mabora tp terlanjur malu,alhasil lanjutin aja biar keliatan masih efek maboranya," seru lainnya.The development of the penile erection, also exhibiting the foreskin progressively retracting