A variation on the
words peng and boobs, meaning the owner of said poobs has a
set of "Peng boobs".
Originating from Nottingham, UK, where poobs are aplenty,
boys regularly spy-out a nice looking lady and set about the task of getting into her underwear to discover just how peng their 'poobs' are.
Naomi - Wow, my boobs look great in this
tight dress, the cleavage comes up to my eyes!
Ben - They certainly are a nice pair of poobs! (Stare)
Naomi - Why thankyou!