Bad figure of speech
"Giving 100%" is a pretty bad expression to use in any case - if you ever could give 100% effort you'd logically be dead afterwards.
(Vice Admiral Sir Charles Cockbrush KCB MBE DSO, who is finding it increasingly difficult to log into b3ta.com wants to duck your aunt and kick your puppy, Wed 7 May 2008, 16:54, Reply)