pain in the bum

Noun

 * 1)  Someone or something very annoying.
 * 2) * 2000, Max Allen, Crush: The New Australian Wine Book
 * This is fine and dandy for the wineries and the consumer but it’s a pain in the bum for people like me who have to pigeonhole everybody to make them fit nicely in a book.
 * 1) * 2003, Alan Grayson, Mile End
 * “Yes, she’s a pain in the bum, coming over all the time.”
 * 1) * 2004, Sandy Row, Surviving the Special Needs System
 * I know I became a royal pain in the bum to the LEA.