A combination of the english words "Proud" and "Fond". Often used when a sense of joyous ecstacy overcomes your ability to comprehend spacing between words resulting the the binding the the afformentioned base words.
Guy 1: "Dude that circle you drew is pround."
Guy 2: "What?"
Guy 1: "You know, like perfectly round."
Guy 2: "oh, yeah it is, now that you mentioned it"