Ya learn something new everyday... Mushroom Stamp

Anyone out there heard of this term before. I hadn't until I read this article. So I decided to look it up and here is the definition I found:

	when a male slaps his penis off the forehead of another individual, leaving a mushroom-shaped mark.

I don't understand how this could happen. Did you not see the dick coming towards your face. I mean most guys would have to be pretty close to you in order to slap you with their dick... unless of course they are this guy...lol