robbing the grave 

When a young person is "on the prowl" for an older person. Opposite from "robbing the cradle".

She was robbing the grave and he was robbing the cradle.

robbing the grave by someonefromearth January 18, 2010

robbing the grave 

Someone who dates a person more than 5 years older than them

That guy is robbing the grave! He is 19 and she is 32!

robbing the grave by John May 25, 2004