Goals from Heung-min Son and Dele Alli ensured Spurs reached the last four for the first time since the 2014-15 season.
Mauricio Pochettino’s men will now face Chelsea in the next round, their fourth all-London tie on the bounce.
Spurs had revenge firmly on their mind after Arsenal won their last meeting 4-2 only 18 days ago.
And the Gunners did everything to rub it in their rivals’ face on social media after that game.
Remember Mesut Ozil’s ‘London is red’ Tweet?
Even the club’s Twitter admin got in with the action:
Aaron Ramsey then posted a picture of him and Eric Dier with the hashtag ‘northlondonisred’ too.
It didn’t stop there though as the club’s official Twitter account uploaded a video of Pierre-Emerick Aubameyang and Alexandre Lacazette commentating on the win in last night’s build-up this week.
However, it seems their social media antics have well and truly backfired.
That’s because Tottenham’s Danny Rose didn’t hold back when he revealed that his side used that as their motivation ahead of last night’s win:
“We were fully relishing the opportunity,” he told Standard Sport.
“Our only motivation was remembering the nonsense that Arsenal posted after the game a few weeks ago.
“That was our motivation.
“Players that have only played 10 games for Arsenal were getting ahead of themselves.
“We used that in a positive way. It’s Karma.
“They fully deserve what they got.
“We had the motivation of getting to the semi-final, so we’re over the moon. But the cherry on top was silencing them after remembering how they celebrated like they had won the league.
“We’ve put that result right. We’ll see where they are come the end of the season and we’ll see where we are.”
Unbelievable from Rose.
Spurs will be looking forward to their semi-final cruncher with Chelsea but for now attentions turn back to the league when they travel to Everton on Sunday.