A simple procedure execute by curious aliens or doctors to examine the lower rectum and other internal organs of a person/animal. They (gently) insert a tool, tentacle or finger into your anus. This allows them to feel your interior and explore it.

This procedure can be considerated a bit invasive by some people.
Kang: My name is Kang, and this is my sister, Kodos.
Kodos: Hello.
Homer: I suppose you wanna probe me. Well, might as well get it over with.
Kang: Stop! We have reached the limits of what rectal probing can teach us.
(The Simpsons - S8E1: Treehouse of Horror VII)
by Arcem___S_V June 15, 2020
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