What is the purpose of the male's arousal response to the sight of another penis?

[Low Rate Rest]

Such as seeing another good-looking erect penis makes yourself erect as well. Being attracted to the male form isn't necessary.

 

[DerKryptid]

Cock is just a bigger clitoris, totally heterosexual OP

 

[Chillycloth]

Just means you've been watching a lot of porn. You originally came for women, now you've subconsciously associated big penises to women.

Same thing would happen with any other object commonly seen with women in porn. If Scooby Doo was in every porn video ever you'd get turned on by the sight of Scooby Doo.

 

[Exigent Circumcisions]

Okay, this is epic.

 

[totallyrandomusername]

You may be gay if...

 

[Prince Légume]

I just think they're neat.

 

[Previously Chimping]

just go fuck him already

 

[Dom Cruise]

It's to let you know it's time to start sucking!

 

[BobbyBriggs69420]

pennies is not supposed to do this, consult a sexologist!

 

[SeniorFuckFace]

 

[JethroTullamore]

Is it a male penis or a female penis?

 

[Solid Snek]

Hey guys, it's me, your good pal Graeme Kelly here. And I'd just like to say guys, that if yer gay, LGBT, that's ok with me. If you're a lad, y'know, and ye like to look at oither lad's penises, I'm fine wih that, so I am. Fine wih that.

Spoiler: Come message me any time, if ye want t'see a Special Needs penis