When a person has been dumped by there girl friend or boy friend and dosent yet know. the word can be used by people or 'friends' of the person to talk about the fact that they have been dumped with out them having any understanding .*warning this may only work on retards. *
Woody: hey how are you guys ? Ash: woody is De-umped! Rhys+Bermo: ahahahahahhaah Woody: what ?