At dinner, or sometimes there about your Significant Other hints that you might be getting some that night. Then right after you get the kids to bed, your mind turns to the task at hand. She yawns:

"WOW, I AM REALLY TIRED. . . "

Then your task at hand, turns into a task at hand. :beatmeat:
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WDFW - Turning outdoorsmen into golfers since 1994.