#2. WHAT?! (Stone Cold Steve Austin)
Seen by many as the original 'YES', Stone Cold Steve Austin's 'WHAT?!' has been a consistent part of WWE television ever since its creation in the latter stages of the Attitude Era.
When it first began, fans were already pretty invested in the Stone Cold character, so it wasn't exactly a challenge to get it off the ground. People have no trouble saying it, even if English isn't their first language, and it carries with it equal parts comedy and disrespect - making it the perfect summary of the Attitude Era itself.
As Austin's career petered out, the WHAT?! catchphrase continued to be used by the WWE Universe, now becoming the ultimate weapon for getting inside the heads of any Superstar you don't particularly like.
In many ways, modern-day WWE heels are judged on how well they handle the WHAT?! taunt with guys like The Miz and Alexa Bliss, in particular, offering some of the best responses.
Its use remains quite controversial today, with many claiming that it has run its course. You could even see it as the ultimate Kayfabe killer, as fans can't seem to help themselves even when a segment is playing out that is supposed to be serious.
In the run-up to WrestleMania 28, even the Undertaker suffered at the hands of the WHAT?! chant, interrupting his typically slow and methodical promo on an episode of RAW.