1.) To have sex with both partners facing the same direction, better known as doggie-style.

2.) A euphemism for having sex in general.

Originates from a line from the Bloodhound Gang song, The Bad Touch: "and we'll do it doggie-style so we can both watch X-Files."
Some Girl: Hey, wanna watch X-Files?
Some Guy: But X-files has been off the air for...oh. Yes. Let's watch X-Files.

Some Dude: There's nothing on TV. Let's watch X-Files.
Some other Dude: Agreed.
by A penguin's lost hat March 5, 2010
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