Acronym for Typical Friday Night. Similar to the infamous "that's what she said" while being said after something scandalous, sexual, or just crazy in general. Creates a joke out of mundane conversation. Can also be used sarcastically to express something as not being "TFN".
Person 1: How was your ice cream cone at lunch?
Person 2: It was huge and hard to manage but I downed it all in the end.
Person 1: TFN.
Person 1&2: BAHAHAHAHAHAHAHAHAHAHAHAHA!!!
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shit, look at that tfn over there, eatting fried chicken, and pounding that OLD E
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Customer support: The option you are referring to is not available with the new generation editor.
Me: Great, TFN.
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