Mushroom Field
When you go to a club and you see a huge patch of dudes standing around with their drinks. (mushrooms are a phallic symbol).
"Man, I went to this club and there were barely any girls. Just endless patches of mushroom fields.
Field Mushroom
A man with an less than average sized penis sprouting long pubic hair.
As he went to pay for the coffee, he dropped his pants and fell. "Jim that is quite a sketchy field mushroom you are packing there. I bet it's delicious." she said. He replied with a hoping smile.