What is the proper etiquette after giving a stranger a boner?

[Fat Gollum]

Is it like spilling a drink on someone? Do I say "Oh my god, I'm so sorry! Here, let me help you with that"?

 

[Haloperidol]

He has to give you one, too. Would just be rude otherwise.

 

[Axiom.]

You have to either settle the score or kill each other like real men.

 

[Commander Kneewing]

A firm handshake.

 

[Mesh Gear Fox]

The least you can do is offer to jerk him off. You made him hard, after all.

 

[SSj_Ness (Yiffed)]

That'd be nice, but doesn't seem to be the case.

 

[dick brain]

I don't think you have to worry about that.