Army - Floorboards (2000) :40 (UK)

An older gentleman is in bed, reading and watching tv. We then see a young man, trying to sneak out of his room, and across the hall a young woman whose room he wants to go to. She's clearly the older gentleman's daughter, and she starts signaling to her boyfriend what floorboards to avoid. The young man is almost caught red-handed, but manages to hide. 

As the super highlights "Signals operator", the voice-over whispers, a little seductively "If you've got what it takes, take it further"