What does a mean when a guy gets a erection?

When a male gets an erection, this means that he is "sexually excited" which causes his penis to become harder than it would normally be. Erections are totally normal to have and they are most common during puberty.

i need the a b or c but mental disorders include repetitiveness,unable to listen, wanting to kill people, thinking that you are perfect, sexuality toward the wrong age types younger than you like a child bad reputations cutting yourself abuse! these are sad but these are true! the titles for some of these are ptsd and adhd. you need to go to jail or get an expert counselor if you face any of these problems or if you have indeed been involved!