An insult for females instead of wanker.
Twat + Wanker = Twanker
"God Sarah your such a twanker..."
A 'Hurplejank' is another word/insult to call a girl in replace of a 'whore'
Sperk: Wow, your ex-wife was such a hurplejank!
Moop: She really was wasn't she?
Sperk: Just like the three before her...