Adj. Someone who is very good at intercourse and enjoyable to sleep with. Usually female even though the term derives from Pilsbury commercials where the Pilsbury Doughboy gets poked in the end and giggles.

Noun: Large white and blubbery individual, usually male. They are the particular subset of lard arses who are so stupid they constantly smile inanely, laugh at everything even when they are having the piss ripped out of themselves.
Derived from that jocular blob of starch the Pilsbury Doughboy