turn-up
noun /ˈtɜːn ʌp/
  /ˈtɜːrn ʌp/
(British English)- (North American English cuff)[countable] the bottom of the leg of a pair of trousers that has been folded over on the outside
 - [singular] (informal) something surprising or unexpected that happens
- He actually offered to help? That's a turn-up for the books!