When you see something which instantly makes you horny.
When I open my eyes only I auto-erect.
The feeling when your foot becomes temporarily hard because you're a lazy prick who just sits in bed all day.
"Whenever I have a foot erection, it makes me hard to wiggle my toes."
That one thing that always comes on at the wrong place, and the wrong time, or right place wrong time, or vice versa.
Guy: "Hey dude, how was the presentation on uhhhh..."
Dude: "You mean the presentation of the solar system?"
Guy: "Yeah, that presentation, so how'd it go?"
Dude: "Not well, I got an erection in the middle of it."
When blood flow happens to enlarge the groin.
I came so my erection would disappear.
What little kids playing in the playpark give me
Kid1: sir what's that
Man: it's my erection
Kid1: what's that?
Man: want to find out? ;)
Kid2: STRANGER DANGER
When a normal sized man is having intercourse with a little woman doggy style, stands up and puts on a large pair of sweatpants while still inside her. He then leaves his house and goes for a walk with what appears to be a massive erection in his pants but is really just his fun sized partner going for a ride.
Did you see that guy on the street today? He either had a disease or a midget erection
When you take a hit from the Lemon Chello Cartnite cart and blow it into a man's urethra so that his dick gets chill like that and gets less hard.
Yo bruh, she gave me that De-Erection and everything was A-Okay!