1.Referring to oral copulation, when a man or woman sucks a penis that is at the Least 8 inches or more in length and 6 inches or more in circumference to the point of swallowing the cum from the penis orgasm, they have been Fencepost Fed.

2. When you haven't had any sleep for 3 days or more, and/or are under the influence of a controlled substance, and your eyes are playing with your brain convincing you that the fencepost across the street is actually a federal agent doing an undercover stakeout of your house disguised as a Fencepost Fed.

3. A remark made by a bf who thinks he's got a big dick, about his gf who is into giving blow jobs.
Ted: Are you guys hungry?

Bev: Nah, I'm pretty full.
William (Bev's bf): Yeah, she's already been Fencepost Fed this morning.

Allan: Is it me or is that a Fencepost Fed there by that cactus cop?
Angala: No, that's the palm tree popo next to the cactus cop and I think that maybe deputy doorjamb behind them.
by DeepThrowWitDancer March 6, 2022
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