#2 Seth Rollins challenges human anatomy (WWE RAW)

In 2015, Brock Lesnar put his WWE World Heavyweight Championship against Seth Rollins and John Cena at the Royal Rumble pay-per-view. It was an excellent match with an equally interesting build-up. In the weeks leading up to the event, Rollins cut a backstage promo on Cena where he royally messed up one of his lines.
Rollins wanted to say that John Cena would tuck his tail between his legs but ended up mixing the words. Here’s what he finally ended up saying as WWE fans erupted in laughter after the botch:
"What he should do is step away, take himself out of the match at the Royal Rumble, tuck his legs, tail between his legs, and walk off, saving himself with whatever dignity that he's got left," said Seth Rollins.
Of course, John Cena would not let this go as he fired back at Rollins for fumbling his lines, leaving the audience in splits. The latter has countless other funny WWE segments to his name, including the time when he tripped over a barricade during his entrance or called a car “blubaababllalalal” when he forgot the word “object.”
#1 Roman Reigns forgets his promo; John Cena buries him on the spot (WWE RAW)

Roman Reigns is undoubtedly one of the biggest superstars in WWE and the entire pro wrestling business today. He has reinvented himself as a heel and has worked on improving every aspect of his gimmick.
Reigns seems to have more control over things he says on the mic now, but that was not always the case. WWE Superstars are often fed long lines that eventually get blurred in their minds by the time they have to deliver the promo.
Thus, it is natural for superstars to mess up their lines once in a while. Unfortunately for Roman Reigns, that was the case with him ever since the Shield split up. All of his promos were the same – big words thrown into repetitive phrases that were presented as threats. No one was scared.
One of his biggest botches came when he was standing across from WWE’s legendary talker John Cena, and as we know, that was a grave mistake.
Back in 2017, John Cena and Roman Reigns were involved in a huge feud. The two superstars were involved in a war of words on WWE RAW. Cena was throwing one insult at Reigns after another while The Big Dog was waiting to respond. The latter started talking but forgot his lines almost immediately. This led to John Cena delivering the iconic statement:
“It’s called a promo, kid. If you’re going to be the “Big Dog,” you are going to have to learn how to do it,” said John Cena.
It was one of the most brutal burns handed out in the WWE ring, especially considering Roman Reigns’ push at the time and how often he was compared to John Cena. As bad as it was for Reigns back then, fans loved every moment of this encounter and still talk about it to this day.
Reigns recently got his revenge when he poetically compared John Cena's in-ring work and promos to a "missionary position every single night." He even mocked the 16-time world champion by yawning during his match.
Reigns and Cena are now once again possibly heading towards a rivalry, and The Tribal Chief now has to settle an old score. However, only time will tell how smart it is to take on Cena in a promo war. For now, the WWE Universe is excited at the prospect of watching Paul Heyman and John Cena ripping into each other as we inch closer to SummerSlam 2021.