00:04:21 and nearly closed at the tip.
00:05:43 This is an erection.
00:05:49 Then less frequent.
00:06:43 Called the vagina.
00:07:42 visible changes at the penis.
00:08:27 the sex organ is fully grown.
00:09:16 the breasts start to develop.
00:15:44 After a while jacking off
00:24:05 and wanting each other