It had reached a fever pitch, Josh had entered a world he couldn't escape. Sadly, it was only when he watched his girlfriend bend over to plug in the vacuum that he began to understand how bad it was for him. Funny thing, if she had simply slipped the plug into the socket and started vacuuming it might not have come to his attention, but when she bent over, slowly slid the prongs into the two dark openings, then pull them out partially as she pulled the vacuum closer to her and then slid them back in again Josh was lost.
While the in and out movement of the phallic prongs into the vaginal outlet had stopped, Josh descended to a more minute level as he pictured the flow of electricity. Yes, the A/C current in its odd in and out flow stuck in Josh's mind. He felt his cock grow as he pictured the electrified sex happening just within the grey electrical cord leading to the vacuum.
Climbing up from the chair he snuck up behind his girlfriend, moved his right hand to her ass and gently squeezed. Grabbing his hand, she quickly spun to face him and said, "Oh no you don't, I am sick and tired of you just grabbing me and fucking me because you got turned on by some sign, or this vacuum or whatever. What is it now, you want a blow job thinking of the suction in this vacuum?"
"Blow job? Suction of the vac? Damn she was good," Josh thought to himself. Backing up a step he said, "Electricity."
"Electricity?"
"Don't you understand? The electrons, or the current, or whatever it is, it's on an alternating current."
"So?"
"Alternating, back and forth, in and out... don't you see it? Right there the electricity is flowing in and out of the outlet, back and forth in the cord, in and out of the vacuum."
"Okay, that's something about Thomas Edison or something?"