To Penge oneself, is to catch or collide one's genital region accidentally on a static object such as a tablecorner, fence post or shelf, usually in a mundane every day situation.
i got up from my chair too quickly and penged myself on the desk
Proper noun: Frenchified form of Penge, a south London suburb which is full of pikeys and as rough as a badger's arse. It has recently enjoyed an influx of gentrifiers who are desperately talking the area up. If pronounced 'ponjay' (with a very soft 'j') an estate agent will add £2500 to the price of your crack den with a blocked toilet.
Laurent and Guy bake these oat-sprinkled baguettes every morning in their boulangerie in the bohemian quarter of Pengé.
Mmmm. Such a wealthy bouquet. Wait! They're identical to the ones I buy from Tesceaux in Croix Nouveau!