A slang term used to describe a women's vagina. It originate's from the hit UK TV comedy 'Bo' Selecta!' and is suited to a generic European accent.
Also, if asked to show your 'potakian', a gesture is made with the mouth to show an inside view of a vagina being tongued ('licked out' etc). This is done by pinching the the top lip with one hand, and the bottom lip with the other. The top lip is then pulled up, the bottom down, and the tongue is then wiggled within the hole.
'Let me see your potakian!' (then followed by the mouth gesture)
when you're holding up your phone and making faces at it, as though you are taking a selfie, but you're really taking a picture of the person across from you or the wall or anything else that seems interesting but you don't want to be caught dead taking a picture of.
This action is often made more convincing by wiggling the eyebrows or opening the mouth, to pretend you're trying to get a Snapchat filter to work.
FRIEND A: "Did you just take a stealthie of me?"
FRIEND B (turning phone around): "no I was just using snapchat's new filter, see?"