An individual whose grandma like stamina projects (albeit unintentionally) a distracted and disinterested air that is interpreted by many as aloofness or conceited disapproval. This is a misconception however, as in contrast to your conventional wanker's feigned apathy a true dweeb-wanker will be genuinely fatigued from a hard days wholesome activities such as weaving or picking out a new pair of 'jim-jams' to match their favourite fluffy sheets.
It was only as Lindsey arrived at a gig at what others saw as 'fashionably late' because he had to finish sewing on his latest scout merit badges that he considered maybe he really was a dweeb-wanker.