you intend to meet someone for a drink, they email you the day before to tell you they can't make it for some reason or other - they have fagged out
when somebody you are intending to meet tells you that they can't make it
"you intend to meet someone for a drink, they email you the day before to tell you they can't make it for some reason or other - they have fagged out" What is the definition of "fagged out"?