Male or female totty whose poshness is an essential part of the appeal e.g. well educated; mellifluous voice; charming classy manners; sophisticated conversation; expensive clothes; trendy address, etc.
"I've always been a push over for a bit of posh totty and couldn't resist the charms of Sebastian, the concert pianist. That silky voice and those smooth hands had my nether regions all a quiver in moments!"
A term used for a female that attends Riddle, that is beyond a twat and does every thing in her power to keep her pussy dry and avoids all male temptation, hence the term "twatty twat twat"
horny riddle student "El dudito that chick is teasing my cock like no other, what a twatty twat twat"