Dad (Something you don't have) - A Dad (Something you don't have) is something you don't have

A Dad (Something you don't have) is something you don't have and never will.

'I asked for a Dad (Something you don't have). He said no. I'm doomed.'

'I need a Dad (Something you don't have) to survive this weekend.'

'You have a Dad (Something you don't have). I just have a dad.'