2 definitions by Sir William Arsenpuffin
A girl who makes herself available to the men around her, allowing them to think she will perform certain sexual favours, whilst not in fact ever performing such favours. Hence useless boob. The boob is there, but useless as she will not allow anyone to make "use" of it.
by Sir William Arsenpuffin April 21, 2003
Get your penai out of her ass, she can't take more than 3 at once.
OR
You're such a penai, Bill. I wish you'd grow up....no, not that way Bill...
OR
You're such a penai, Bill. I wish you'd grow up....no, not that way Bill...
by Sir William Arsenpuffin April 21, 2003