1.) nerdy or dorky. 2.) "hugely winning" (as in, "what a fucking winner"). 3.) a term used whenever the impulse to laugh is created (i.e. embarrassing situations).
Another word for "Dickish" relating back to the word "penis" instead of "dick." Used to describe how much like a penis a situation, person, or thing is. Also used in conjunction with the suffix "man" (i.e. Peenish-Man) but is still used in the same context as the singular word "peenish."
"Shit... man, I can't believe you would do something that peenish."