There are many ways, including rubbing it, getting sexually excited, and having sex.
You can tell when a guy is on hard when their penis stands up in their pants and when their penis is hard
They have a hard penis...
it shouldn't be hard to get your penis hard. Try rubbing it, jacking off, thinking of sexual desires, having sex, getting a blow job. showing your penis to a girl. stripping.
Hard enough to remove your penis, as i found out (the hard way)
Your body pumps blood into it until it grows hard,
No.
Good.
yes
Yes. They shrink when not hard
I hope not.
If the penis is hard then it is hard sex if the foot is hard it is hard core ;)
What is the best pill to make my 7 1/2 penis hard for three days