Box Dump

The act of defecating into another’s rectum.

The route of the phrase originates from prison slang as the act is often used as an initiation or power assertion within the pecking order of inmates.

I box dumped him and he now answers as my bitch.

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dump box

The act of a male delicately licking the vagina of a female while she is defecating, preferably log-type shit but explosive works as well.

"Dude I totally gave Tiffany a dump box the other night. It was awesome!"

"I love when he does a dump box on me."

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Dump box

When a girl gets eaten out while sitting on the toilet taking a dump.

Tiffany totally got a dump box from Tom last night!

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McDonald's Dump Box

When you have a plethora of items in your pocket, and they all dump out over a period of time.

Me: hey you dropped more shit!
You: ah jeez, look at me being a McDonald's Dump Box again!