There is no hard and fast rule. but as I remember to my embasasment far more often then I liked,
He's a boy...
sorry to say it but at 22 you're not a boy
By getting naked
one pair per day
It is known as an erection. This happens once the boy has begun puberty. He will have an erection because of his readiness in nature to reproduce. It happens when he thinks of something that turns him on or through stimulation and randomness.
just wait and it will eventually grow in size drop and become redder and wider
10 =]
Penis size varies a lot from boy to boy (and man to man) and whatever length YOUR erection is well that is the correct length for you. As the old saying goes "it's not how big it is but what you do with it that matter."
It is possible for a boy to get an erection from hugging a girl if he feels sexually aroused or excited during the interaction. Erections can be influenced by a variety of physical and emotional factors, including attraction and arousal.
how ever many times 80 times
get ZAC FISHER TO RUB IT
When he looks at you, does he get an erection.