A Trans-Atlantic Pipeline is a sex act where multiple men line up in a standing position and stick their penis into the persons ass in front of them, then, proceed to piss and spread the "oil" down the pipeline.
+: We have so many rats in our dorms, and I have to pay some smuggler to adopt a cat??!!
-: I know the solution, the transcatlantic pipeline!
+: Oh knock it off, cats would claw and rupture the pipes!
The Maria pipeline is a pipeline or rabbit hole that Twitter and Tumbler users might enter after excessive usage of said platforms. In a bid to fit into the community the person in question will do a complete identity shift, sexuality shift and even (in extreme cases) gender shift. The Maria-Pipeline phenomenon is named after the Norwegian celebrity Maria, who is known for going through the pipeline and spreading awareness of it.
Ooh man, She/He really fell deep into the Maria-Pipeline, it's a completely differentperson now!