Possible Clues:

• Dead end
• Road with no outlet
• It leads nowhere
• Cul-de-sac
• Drunken colleague without energy in dead-end position
• Unlikely to see anything other than a reversal here?
• You can't go through with it or see through it
• Bachelor girl you will look up - no progress there
• Dead-end street, perhaps
• It has only one way in