Short for Competitive Team Fortress 2. In North America this typically means anything going on with ESEA's 6v6 League and to a lesser extent UGC's Highlander. Comp TF2 is (un?)known for its relative seclusion from the rest of TF2, with few of TF2's Massive Playerbase aware that it even exists, and even fewer willing to make the jump from Pubs to Comp themselves. This is in contrast to Valve's other multiplayer games such as Counter-Strike and DOTA 2, where the "pros" (or at least the teams they belong to) are well-known to the typical player.
B4nny, the best player in Comp TF2, once joined a Public Server and destroyed everyone there. No one knew who he was.
by E+l=8 January 29, 2013
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the demoman from tf2 but with a sword
demoknight tf2
by Crabulon October 18, 2020
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A bound between two people stronger than marriage.
Stop bullying my TF2 Buddy

Good job TF2 Buddy
by Yee Loomis November 2, 2017
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A term used to define a game that, despite not getting a lot of attention from its developer, retains a large playerbase.
Named after one of the best examples of such phenomenon: Team Fortress 2.
Randy: "Skyrim is a dead game, why do people still talk about it"
Alex: "Because it's a TF2 Clause."
Randy:

Alex: "It maintains a playerbase without getting much attention from the devs."
by 16Bitboy December 7, 2022
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Hop on tf2 is a secret message that homesexuals use to signify hot gay sex. They use this if they are super horny, like intergalactic levels of horny. If you hear this phrase being directed at you, be aware.
Mom:"i just heard him say hop on tf2 to one of his friends, I'm supper worried for him."
by Doxi February 18, 2021
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Heavy TF2 is the legendary warrior from the game TF2

He mostly A Poses through the world and is bullet proof.

He found a way to outsmart bullet
Person 1: can you outsmart bullet *gets out gun*
Heavy TF2: *catches bullet* i outsmarted bullet
by PeterGriffin69420 November 9, 2021
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When you have sexual intercourse with any of the playable classes from the 2007 video game team fortress two
by I_eat_dick October 15, 2021
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