I first obtained this joke about 35 years ago, and apparently this is what happens when electrical engineers have too much time on their hands... (and/or no girl friend?)

Warnings:
Suggestive terminology.
May require knowledge of electrical terms.

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One night when his charge was pretty high, Micro-Farad decided to
seek out a cute coil to let him discharge.

He picked up Milli-Amp and took her for a ride on his Megacycle. They
rode across the Wheatstone Bridge, around the sine waves, and stopped
in the magnetic field by a flowing current.

Micro-Farad, attracted by Milli-Amp's characteristic curves, soon had
her fully charged and excited her resistance to a minimum. He laid
her on the ground potential, raised her frequency, and lowered her
reluctance.

He pulled out his high voltage probe and inserted it in her socket,
connecting them in parallel and began short circuiting her resistance
shunt. Fully excited, Milli-Amp mumbled, "OHM-OHM-OHM."

With his tube operating at a maximum and her field vibrating with his
current flow, it caused her shunt to overheat, and micro-Farad was
rapidly discharged and drained off every electron.

They fluxed all night trying various connections and sockets until
his magnet had a soft core and lost all of its field strength.

Afterwards, Milli-Amp tried self-induction and damaged her solenoids.
With his battery fully discharged, MicroFarad was unable to excite
his field, so they spent the rest of the night reversing polarity and
blowing each other's fuses.

THE END